1.Mary [watch].........TV at 9 o'clock yesterday.
2.John [play].........soccer while I [swim].........
3.The light [go out].........while we [have]........dinner.
4.Don't forget [turn off].........the lights before [go]..........out.
5.We were hungry, so I suggested [have]..........dinner early.
10.Yes, I [already/do].........it.
12.This is the second time you [break]........a cup.
14.The gate.........[lock]........at 6.30 p.m everyday.
16.Mr.Thanh [not/drive].........to work this morning.
17.Lan is always [talk].........on the phone.
18.The vase of flowers [paint]........blue.
19.Next summer vacation, my family intend [visit].........Phong Nha cave.