Susan decided not to work on the program at home because she didn’t want her parents to know what she______ . 
#102624
A
has done
B
was doing
C
had done
D
is doing
推荐题目
(2014·湖南株洲一模)—Thank you for your tea.—You are so kind to say so,but you________it at all.
#99145
A
didn’t drink 
B
aren’t drinking
C
don’t drink 
D
hadn’t drunk
 —He _____to the meeting. Have you informed him of it? —Sorry. I______to.
#104380
A
hasn’t come; am going
B
didn’t come; have forgotten
C
hasn’t come; forgot
D
doesn’t come; will have