---How much shall I pay for the phone ca
问题:
---How much shall I pay for the phone call? ----You ____ .This is free of charge.
A.shouldn’t
B.can’t
C.needn’t
D.mustn’t
---How much shall I pay for the phone call? ----You ____ .This is free of charge.
A.shouldn’t
B.can’t
C.needn’t
D.mustn’t