-How much shall I pay for the phone call?-You __________. This is free of charge.
#89479
A
shouldn’t
B
can’t
C
needn’t
D
mustn’t
推荐题目
 If I ____ you, I would join the army.
#86757
A
am
B
was
C
were
D
would be
You _____ him the news; he knew it already. 
#89557
A
needn’t tell
B
needn’t have told
C
mightn’t tell
D
mightn’t have told
.If I _____ the money, I would have bought a much bigger car.
#89366
A
possessed
B
owned
C
had     
D
had had