We’ve been _____ for her for 5 hours.
#58713
A
wait
B
waiting
C
to wait
D
waited
推荐题目
When did your mother _____ home?
#59677
A
Return
B
return to
C
return back
D
return back to
---Miss Hu, I have trouble __________ grammar and __________ the text. 
#55875
A
with; to understand
B
on; in understanding
C
with; understanding
D
on; to understand