He paid for a seat, when he ______ have entered free.
A．could B．would
C．must D．need
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
