31. If it …….. convenient, let’s go out for a drink tonight.
a. be b. was c. were d. is
32. If you ……. time, please write to me.
a. have b. have had c. had d. has
33. If you had the chance, ………… you go finishing?
a. did b. would c. may d. do
34. Trees won’t grow ……….. there is enough water.
a. if b. when c. unless d. as
35. If you ………. to my advice in the first place, you wouldn’t be in this mess right now.
a. listen b. had listened c. will listen d. listened
36. I wish I …….. you some money for your rent, but I’m broke myself.
a. can lend b. could lend c. would lend d. will lend
37. If someone ……… into the store, smile and say, “ May I help you?”
a. comes b. came c. would come d. could lend
38. If you stay up late the previous night, you ………. sleepy the next morning.
a. feel b. to feel c. feels d. will feel
39. If Peter ………., Sarah will be sad because she wants to meet him very much
a. comes b. do not come c. does not come d. will come
40. If his teeth still …….., he will have to go to the dentist’s again.
a. hurt b. hurts c. to hurt c. will hurt