I still have a doubt on a few sentences.

1. They are criticizing everything that/which/no pronoun I do.
Which are possible?
2. I found a toy car, whose (of which is a mistake?) flat tyre was missing.
As to the comprehension you suggested to me is the last question true or false (it should be true)

3. The first time I ever met Clare, she was working in a clothes store in Chicago. I was feeling pretty embarrassed because I had gone in to buy a scarf for my sister and there were 20 or 30 women in there and I was the only man.
4. I was standing in the scarves, hats and gloves section feeling sorry for myself when Clare walked up to me and asked me if there was anything I needed.

5. She looked very beautiful and was dressed elegantly. I must admit that for a couple of seconds, I wasn't able to say anything. I just looked at her. Finally, I said, "what size scarves do you have?" and then realized that it was quite a stupid question. I left the store a few seconds later without buying anything.

6. Two days later, I was sitting in a coffee bar around the corner when I heard a voice behind me say, "did you ever find the scarf you were looking for?" I turned around and was amazed to see the same pretty girl from the clothes store. We laughed about it and shared a coffee together.

7. Two weeks later, I was brave enough to ask Clare to go to see a movie with me. You can imagine how unhappy I was when she said that she couldn't go with me. She promised to call me another time, but I didn't believe her. The next morning, my cell phone rang and I recognized her number on the screen. She said she was free and asked if I still wanted to go to the cinema. That was seven years ago and now we've been married for nearly 5 years.

Clare didn't go to the cinema with Clark because she was busy. True or false

1. They are criticizing everything I do.

2. ... whose flat ...

3. ... because I had gone in to buy a scarf for my sister and there were 20 or 30 women in there and I was the only man.
(MAKE THAT INTO TWO SENTENCES INSTEAD OF SO MANY INSTANCES OF "and")

4. OK

5. CAPITAL "W" ON "what"

6. CAPITAL "D" ON "did"

7. OK

To answer your questions:

1. In the sentence, "They are criticizing everything that/which/no pronoun I do," all three options are grammatically correct.
- "They are criticizing everything that I do" emphasizes that they are criticizing specific actions.
- "They are criticizing everything which I do" emphasizes that they are criticizing all actions.
- "They are criticizing everything I do" is a more informal way of expressing the same idea.

2. The sentence "I found a toy car, whose flat tire was missing" is grammatically correct. However, "whose" refers to possession and is typically used to refer to people. In this case, it would be more appropriate to use "which." So the corrected sentence would be: "I found a toy car, the flat tire of which was missing."

As for the comprehension question, I would need more context or information to determine if it is true or false. Could you please provide additional details or clarify your question?

3. This sentence describes the speaker's first encounter with Clare, who was working in a clothes store in Chicago. The speaker felt embarrassed because he was the only man among many women.

4. In this sentence, the speaker was feeling sorry for himself while standing in the section of the store that sells scarves, hats, and gloves. Clare approached him and asked if he needed anything.

5. The speaker describes Clare as beautiful and elegantly dressed. He admits to being momentarily speechless and asking a somewhat silly question about the size of scarves. He then leaves the store without buying anything.

6. Two days later, the speaker is sitting in a coffee bar when he hears a voice asking about the scarf he was looking for. He turns around and is surprised to see the same girl from the clothes store. They laugh about the previous encounter and have coffee together.

7. Two weeks later, the speaker gathers the courage to ask Clare to go see a movie with him. She initially declines, but later calls and asks if he still wants to go to the cinema. It has been seven years since then, and they have been married for nearly five years.

Regarding the question about Clare not going to the cinema with Clark, without further information, it is difficult to determine the exact reason. However, the given statement suggests that she was initially busy but later changed her plans and went to the cinema with the speaker. Therefore, the statement "Clare didn't go to the cinema with Clark because she was busy" is false.