What ________ you ________ at this time yesterday?
#37876
A
did, do
B
have, done
C
were, doing
D
are, doing
推荐题目
 Every year, more than 70.000,000 sharks____for their fins.
#36735
A
were killed
B
have killed
C
are killed
D
will kill
 We ___________ when the teacher came in.
#42509
A
were talking
B
talked
C
talk
D
are talking
Look! What a clean room! Who _______it ?
#39852
A
has cleaned
B
is cleaning
C
will clean
D
cleaned