Grammar. Tenses

What were you doing/ had you done when I phoned you last night?

When Susan came home, her husband had already/ was already cooked the meal.

What would you have done if you haven't/ hadn't found a taxi that night?

It's really cold today. I think it is going to snow/ snows tonight.

I am going to have/ have my computer fixed next week.

What do you do/ are you doing first when you get up in the morning?

I can't come out now. I am writing / write a letter.

Look! You have already dropped /dropped your burger on the floor now!

Shall I give you a lift into town? I will go/ will be going that way anyway.

She was sleepy because she had been studying/ has studied until 2.00 am.

She didn't use/ is not used to drive but now she drives everywhere.

I would take a holiday now if I didn't/ wouldn't have so much work.

Ann first has met / met Nick at a Christmas party.

When do you think you will be/ will have finished that report?

If you will find/ find my wallet, please phone me immediately.

President Kennedy has been/ was assassinated in 1963.

I have never seen / will never see such a great film before.

I must go now. I will see/ will have seen you at the same time next week.

Where have you been? Everybody waited/ has been waiting for you.

They have/ are having the house redecorated at the moment.