When I was walking past his room yesterday evening．I heard him ____the piano ．
A． playing B． to play
C． played D． play
Dad ,you have worked for three hours ．Stop ____and have a vest, please ．
A． to work B． working
C． work D． works
----Why don’t you go out to play , Rose?
----I’m afraid I can’t ．I have much homework ____．
A． do B． does C． doing D． to do
In the library , you keep quiet.
A． may B． might C． must D． can
I will stay with my friends I get my own place to live in．
A． before B． when
C． because D． after
-----Why does Tony look so today ?
----She’s won the first prize in he English contest ．
A． sad B． happy C． tired D． bored
