Сделать из предложений: положительные, отрицательные,во формы предложений(с каждым предложением):

We live in a beautiful room downstaris.

I naturally followed

Cindy and i laughed a lot.

They saw me.

1) If the plane had left on time, they …would have been (be) in Minsk now. 
2) If they hadn’t walked 40 km, they …would not have been (not / be) exhausted now. 
3) What would have become of us, if I …would have come (come) to you then!' 
4) He would have been scrupulous — if he (can) had been able to… ! 
5) What will be the answer if you (add) …add 17 to 75?
6) If he …practices (practice) every day, he …will become (become) a champion. 
7) She …will help (help) us if we …ask (ask). 
8) If you …had (have) a driving license, you …would get (get) this job.
9) My dog …would (be) 20 years old today if it …were (be) alive. 
10) I … would have visited (visit) Sarah yesterday if I …had known (know) that she was ill.

Present Perfect:

I have done my homework already.

He hasn't done his homework yet.

I have never met such a nice person.

Present Simple:

I go to school every morning.

We usualy have tea after breakfast.

She works as a shop assistant.

Present Continuous:

I am listening to music now.

We are watching TV right now.

Peter is playing football now.

Past Simple:

I saw him yesterday.

They painted the house two years ago.

Nick visited his grandmother last week.

Past Continuous:

I was playing tennis when he called me.

She was writing a letter yesterday at 5 o'clock.

We were cooking dinner when he came.

Объяснение: