Exercise

17
Write a right form of the verb. The sentences are about imagined situations in the past and present. 
 1.  - If I ______ (be) at the stadium,  I ______ (not leave) you in the street in such a cold weather. They shouldn't have done it.
 2.  - If Jack _____ (have) more free time, he _____ (study) more, but since he trains tennis he is occupied all the time.
 3.  - What ____ you ____ (do) if you ______ (encounter) an alien?
 4.  - She _______ (not forget) to call you, if I _______ (remind) her. Luckily, I have left her a note.  
 5.  - If they _____ (advertise) their product more, it ______ (sell) better. Unfortunately, they disappeared from the market.
 6.  - Mark _____ (try on) this jacket if he _____ (be) here. Where is he now?
 7.  - If they ______ (pay) attention to what they had been doing, the accident _____ (not happen) at all. 
 8.  - What _____ you ____ (do) if you ______ (know) that they were in your town?
 9.  -If we _____ (can) run faster, we _____ (win) a medal. But, we won nothing.