---Will people live to be 300 years old ?
--- ______________ .
| A．No, there are . | B．No, they won't. |
| C．No, they don't . | D． No, they can't . |
There are too many kinds of shoes here , I can’t decide ________.
| A．to buy which pair | B．which pair to buy |
| C．buy which pair | D．which pair buying |
A: Would you like to fly kites with me , Tom?
B: I’d love to , but my mother isn’t at home, I ______ look after my little sister.
| A．must | B．can | C．may | D．have to |
He _______ to Beijing in 2008, He _______ there for more than 5 years.
| A．has gone, has been | B．has gone, went |
| C．went, has gone | D．went , has been |
_____ a smile on his face, he came into the classroom.
| A．Have | B．Has | C．There is | D．With |
A: Hey, man. You can’t cross the street now. You have to wait _____ the traffic lights turn green.
B: Oh, sorry and thank you.
| A．when | B．after | C．until | D．while |