---I have finished my homework already, Mum.--- When ________ you ________ it?
#39872
A
did; finished
B
did; finish
C
have; finished
D
were; finishing
推荐题目
Our country _______ a lot in the last fifty years. 
#38761
A
will change
B
changed
C
changes
D
has changed
--Where is Grace?--She _____ in the yard.
#42260
A
reads
B
read
C
is reading
D
was reading
--- ________ did your uncle leave his home town?.--- Let me see. He _______ for nearly twenty years.
#39323
A
When; has left
B
When; has been away
C
How long; has left
D
How long; has been away