—Why is the classroom so dirty?—Sorry，sir. It yesterday, We forgot to do it.
#39874
A
doesn’t clean
B
didn’t clean
C
isn’t cleaned
D
wasn’t cleaned
推荐题目
My grandparents _________for fifty years and they are both quite healthy now.
#38397
A
marry
B
have been married
C
are married
D
have gotten married
——Dad, please tell me when Mum_____. I miss her very much.——She will return when she_____her task. And she will bring a nice present for you.
#39162
A
returns;finishes
B
returns;will finish
C
will return;finishes
D
will return;will finish
Tom ________ a letter from Terry for a long time.
#42664
A
didn’t receive
B
hasn’t got
C
didn’t have
D
hasn’t heard