2.All parents (love)their children
3.The students (have)a computer lesson now.
4I (throw)away me old pencilcase this morning.
5.We (be)happy if you intive us.
6.I (sleep)while my father was working.
7.My mother (tell)me to bring my unbrella this morning
8.Work hard or you (fail)in the exam.
9.Here is the book that (belong)to you.
10.Betty (be)at schoo a moment ago.
11.When the baby feels hungry, he (cry)
12.The workmen (start)to work next week.
更新1:
括號是原先佢既tense...但是佢前面要你改既...