I still have a few doubts on sentences you checked yesterday.

1) I did/had/went for an interview. (Is "do" possible?)
2) I've just taken (done is a mistake) a grammar test.
3) I've just been tested orally in English.
4) I haven't taken an oral English test yet.

1. The verb do/did is not usually used with "interview" -- I think because it's unclear. If you did an interview, did you interview someone? Or did someone interview you??

Better to say/write one of these:
I had an interview...
I went for an interview ...
OR
I conducted an interview ...
I interviewed the applicant ...


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2. Use "taken" -- "done" is not usually used in this way.

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3. and 4. are fine.

Sure! I can help address your doubts on these sentences.

1) "I did/had/went for an interview."

In this sentence, "had" and "went" are more commonly used to describe the experience of going for an interview. The verb "did" is generally not used alone when referring to an interview, but it can be used in combination with other words to describe specific actions related to the interview. For example:

- "I did well in the interview."
- "I did my best during the interview."

2) "I've just taken (done is a mistake) a grammar test."

You are correct, the verb "done" doesn't fit in this sentence. The correct verb to use here is "taken". This sentence means that you have recently finished or completed a grammar test.

3) "I've just been tested orally in English."

This sentence is correct and it means that you have recently gone through an oral test in English. Here, the verb "been tested" indicates that the action was performed on you.

4) "I haven't taken an oral English test yet."

This sentence is also correct. It means that you have not yet taken an oral English test. The word "yet" indicates that the action has not happened up until now, but it may happen in the future.

Remember that the best way to confirm whether a sentence is correct is by checking grammar rules, consulting reliable sources, or seeking assistance from a language teacher or an expert.