---How much shall I pay for the phone call? ----You ____ .This is free of charge.
#87315
A
shouldn’t
B
can’t
C
needn’t
D
mustn’t
推荐题目
-----I _____without your help. I do appreciate it . -----You are welcome. 
#86686
A
can’t manage
B
couldn’t manage
C
can’t have managed
D
couldn’t have managed
The teacher suggested the dictionary         at once.
#87219
A
be referred to be bought
B
be referred to being bought
C
referred to be bought
D
referred to being bought