When you're invited to have dinner at home by an American friend，you should be ___ or a little later．It's different from our Chinese custom．（ ）
| A． |
on time |
| B． |
on business |
| C． |
on show |
Where is your uncle？
He____ America and he____New York for two weeks．（ ）
| A． |
has been to； has been in |
| B． |
has gone to； will stay in |
| C． |
has been in； has been to |
| D． |
has stayed in； has gone to |
My mother doesn't like stories_____have sad endings．（ ）
| A． |
that |
B． |
who |
C． |
where |
D． |
those |
Could you tell me____？（ ）
| A． |
when will they leave Beijing |
| B． |
when would they leave Beijing |
| C． |
when they will leave Beijing |
| D． |
when they would leave Beijing |
These foreigners are practicing_____Chinese．（ ）
| A． |
to speak |
B． |
speaking |
C． |
speak |
D． |
speaks |
Shanghai is one of____in the world．（ ）
| A． |
the biggest cities |
B． |
biggest cities |
| C． |
the biggest city |
D． |
bigger cities |