.It is often said that an American starts speech with a joke, __ a Japanese has an apology to make.
| A．as | B．when | C．which | D．while |
_________ his work , he can’t play with his friends.
| A．Not finishing | B． Finishing not | C． Not finish | D． Not finished |
All I have to do is _________my life .
| A．to enjoy | B．enjoy | C． having enjoyed | D． enjoyed |
When _______ homework , you should be careful .
| A．do | B． to do | C．doing | D． done |
_______ the news, they are very happy.
| A．Hearing | B．Heard | C．Hear | D． To hear |
We last night, but we went to the party instead.
| A．must have studied | B．might study | C．should have studied | D．would study |