I’m glad you’ve come back from the United States. Please tell me how long you ____there.
#52070
A
have stayed
B
had stayed
C
have been staying
D
stayed
推荐题目
 You must be tired now. Why not ________ to have a rest?
#56825
A
to stopping
B
to stop
C
stop
D
stopping
14. Don’t try to do everything at once. Take it a bit __________.
#61431
A
at times
B
at that time
C
at all times
D
at a time
Let’s ________ the map. 
#57172
A
look
B
look at
C
look to
D
see