I ______have been more than six years old when the accident happened.
A．shouldn‘t B．couldn't
C．mustn't D．needn't
Rod loves clocks.However，he never manages to put them together again.
A．taking apart B．giving away
C．making up D． turning off
He helps me with English, and I help him with Chinese ．
A．for return B． as return
C．in return D． to return
The players from the whole country are expected to bring us honor in this summer game.
A．selecting B． to select
C．selected D． having selected
He usually appears to be honest.Who can fancy such a thing?
A．his do B． his doing
C．his to do D． doing
There are concerns that the beggars in the street may not the freezing winter.
A．survive B． live
C．suffer D．experience
