31. will have 

32. looked

33. fed

34. would understand

35. would arrive 

36, would have had 

37. swim 

38. press

39. had asked 

40. would call- were

41. listened

Bn học tốt!!

31. If we meet at 9:30, we (have) will have plenty of time.

32. Lisa would find the milk if she (look) looked in the fridge.

33.The zookeeper would have punished her with a fine if she (feed) had fed the animals.

34 . If you spoke louder, your classmates (understand) would have understand you.

35. Dan (arrive) would drive safe if he drove slowly.

36. You (have) would have had no trouble at school if you had done your homework.

37. If you (swim) swim in this lake, you’ll shiver from cold.

38. The door will unlock if you (press) press the green button.

39. If Mel (ask) had asked her teacher, he’d have answered her questions.

40. I (call) would call the office if I (be) were you.

41. If they (listen) listened carefully, they might hear the woodpecker.