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 Trang 28 she................................(feed) the animals.