---Look! The clouds are gathering. ---Yes. I’m afraid it    be pouring down soon.
#88221
A
can
B
must
C
should
D
might
推荐题目
While watching television, __________.
#90451
A
the doorbell rang
B
the doorbell rings
C
we heard the doorbell ring
D
we heard the doorbell rings
He       you more help,even though he was very busy.
#89660
A
might have given
B
may give
C
must have given
D
might give