1.All of the balloons on the string (popped) except two.

2.Do you (want) to buy those books?
3.Daniel's dog is (following) the trail to the river's edge.
4.For thirty years the noon whistle has (blown) exactly on time.
5.The players have (challenged) their parents to a game of soccer.

I have to tell if the verb form in () is base form, present participle, past, or past participle.

1.past
2.base form
3.present participle
4.past participle
5.past

2) Isn't "base form" the infinitive? This is not the infinitive but the Present Indicative Tense.

to want = base form
you want, you DO want, you ARE wantING = all forms of the Present Indicative Form.

I don't know what your text book is, but the above is what it is to me.

Sra (aka Mme)

To determine the verb form in each sentence, you can follow these steps:

1. Identify the verb in the sentence.
2. Check the word in parentheses (the verb form) against the different forms of the verb (base form, present participle, past, past participle).

Let's analyze each sentence together:

1. All of the balloons on the string (popped) except two.

- Identify the verb: popped
- Compare "popped" to the different verb forms:
- Base form: pop
- Present participle: popping
- Past: popped
- Past participle: popped
- The verb form in parentheses, "popped," is in the past tense.

2. Do you (want) to buy those books?

- Identify the verb: want
- Compare "want" to the different verb forms:
- Base form: want
- Present participle: wanting
- Past: wanted
- Past participle: wanted
- The verb form in parentheses, "want," is in the base form.

3. Daniel's dog is (following) the trail to the river's edge.

- Identify the verb: following
- Compare "following" to the different verb forms:
- Base form: follow
- Present participle: following
- Past: followed
- Past participle: followed
- The verb form in parentheses, "following," is in the present participle.

4. For thirty years the noon whistle has (blown) exactly on time.

- Identify the verb: blown
- Compare "blown" to the different verb forms:
- Base form: blow
- Present participle: blowing
- Past: blew
- Past participle: blown
- The verb form in parentheses, "blown," is in the past participle.

5. The players have (challenged) their parents to a game of soccer.

- Identify the verb: challenged
- Compare "challenged" to the different verb forms:
- Base form: challenge
- Present participle: challenging
- Past: challenged
- Past participle: challenged
- The verb form in parentheses, "challenged," is in the past tense.

So, to summarize:

1. (popped) - past
2. (want) - base form
3. (following) - present participle
4. (blown) - past participle
5. (challenged) - past

Is there anything else that I can help you with?