—How long does it take to get to the airport？
—Forty minutes．But it’s foggy today．I’m not sure________the highway will be closed soon．Let’s set off earlier．
| A．whether |
| B．when |
| C．how |
| D．why |
It is well known that the Diaoyu Islands________（属于）to China．
—Whose guitar is this?
—It________Alice．She plays the guitar．
| A．might be |
| B．must be |
| C．can belong |
| D．might belong to |
—Who’s the man over there?Is he our English teacher?
—No，he________be our English teacher．He________be our Chinese teacher because our Chinese teacher is much taller than our English teacher．
| A．mustn’t；must |
| B．can’t；must |
| C．can’t；can |
| D．mustn’t；can |
“________bookcase is this?”“It must be________．”
| A．Who’s；Tom |
| B．Who’s；Tom’s |
| C．Whose：Tom’s |
| D．Whose；Tom |
The nice hair band must belong to Jane，because she is the only girl here．
| A．is Jane’s |
| B．is Jane |
| C．be Jane |
| D．be Jane’s |