What Mr. White said sounds_______.
A. friendly
B. wonderfully
C. pleasantly
D. nicely
She went to Hangzhou by train last night. She _____ be at home now.
A. must not
B. may not
C. can't
D. needn't
When he arrived at the bus stop, the bus ________ for 20 minutes.
A. has left
B. had left
C. has been away
D. had been away