4. stood
5.had met
6.was riding
7.lived
8.hadn't worn
9.goes/reads
10.was walking
11.went
12.had gone/went
13.was studying/ was having
14.were dancing
15.was sitting
Ex 3:
1. After david had gone home, we arrived
2.Before we took a look around the shops,we had lunch
3.When we go out of the ofice,the light had gone
4. By the time she had explained everything clearly,we started our work
Chúc e học tốt nhó :>>>>>>
