Bài 1: Chia động từ trong ngoặc:

21.If I (be) ………………..you, I (tell) ……………………..her the truth.
22.Why didn’t you attend the meeting?
Oh, I (not know) ………..indeed. If I (know) ………I (come) ……. there.
23.What ……….we (do) …..if they (not come) …………..tomorrow?
24.If you meet him, remember (not tell) ……………….him what I (just say) …………………… to you.
25.If I (have) ………….enough time now, I (write)………to my parents.
26.It’s too bad Helen isn’t here. If she (be) ……………there, she (know) ……………………what to do.
27.If I (not eat) …………………breakfast tomorrow morning, I (get) ……………..hungry during class.
28.I (change) ………….the present economic policy if I (be) ………

the President of the United States.
29.If the weather (be) ……nice today, we (go)……………to the zoo.
30.If I (be) ……..in your position, I (not do) ………………………….that.

31) If we meet at 9:30, we.........................(have) plenty of time.
32) Lisa would find the milk if she..............................(look) in the fridge.
33) The zookeeper would have punished her with a fine if she................................(feed) the animals.
34) If you spoke louder, your classmates....................(understand) you.
35) Dan..............................(arrive) safe if he drove slowly.
36) You.........................(have) no trouble at school if you had done your homework.
37) If you…………..........(swim) in this lake, you'll shiver from cold.
38) The door will unlock if you.........................(press) the green button.
39) If Mel...........(ask) her teacher, he'd have answered her questions.
40) I..........................(call) the office if I were you.