It’s half past four. School is over. The children___ games happily on the playground.
#41919
A
play
B
are playing
C
played
D
have played
推荐题目
---Why haven’t you asked her to come here?---She _______ an important experiment when I found her and she _____ it. 
#41859
A
had done; didn’t finish
B
was doing; hasn’t finished
C
did; wouldn’t finish
D
has done; hadn’t finished