1.If you_____________ (phone) me earlier, we could have bought this book.

2.I can’t stand Mr. Brown! He__________________(always / tell a lie).

3.Steven______________(work) at this problem for three months. We’ll be able to see the presentation next week.

4.We________________(just / buy) a new car.  We can go to the see.

5.Before Olga came to London, she___________________(learn) English for three years.

6.When her mother came home, Helen____________________(clean) the room since morning.

7.Thank you for_______________(come) in time.

8.There is no reason in______________(argue).

9.If the train _________________(come) in time, we would not have been late at the concert.

10.Yesterday at 5 o’clock Tom _______________(do) his homework and could not go for a walk.

11.Yesterday by 5 o’clock Tom_______________(do) his homework and could go  for a walk.If you ________________(phone) me, I would go to the cinema.

12.When her mother came home, she______________(write) the letter and___________(go) to the park with her friends.

13.If he _______________( buy) a car, we’ll go to the see.

14.If he___________________(buy) a car, we would go to the see.

15.If he____________________(buy)a car , we would have gone to the see.

16.My father _________________(work) here for three years.

17.My father__________________( repair) this car since morning.

18.If I had learned the grammar rules, I __________________(not /get)  a bad mark.

19.If I learned the grammar rules, I_______________________(not/ get) a bad mark.

20.If I learn the grammar rules, I_______________________( not / get) a bad mark.