答:
4)He was playing
5)what you were doing
6)he was laughing
7)What you were doing
8)I was having
9)I was waiting
10) he was robbing
was playing
were doing
was laughing
was doing
was having
was waiting
was robbing
答:
4)He was playing
5)what you were doing
6)he was laughing
7)What you were doing
8)I was having
9)I was waiting
10) he was robbing
was playing
were doing
was laughing
was doing
was having
was waiting
was robbing