If you play sports ______a living, your job will sometimes be very dangerous.
A. for B. at C. by
---Who can tell me_______? ---Every 15 minutes.
| A．when the bus will arrive. | B．how often the bus arrives |
| C．how long has the bus been away | D．when will the bus arrive |
---Few young people in China know about Lady Gaga , _______?
---_______, she is quite famous here in China.
| A．do they; No | B．do they; Yes |
| C．don’t they; No | D．don’t they; Yes |
–Look! A man is cutting a tree on the moon.
--It ______ be true. The teacher said there is no air on the moon.
| A．can’t | B．may not |
| C．shouldn’t | D．mustn’t |
All of us went to the park ______ Bob. He had to look after his sister.
| A．besides | B．with |
| C．except | D．around |
I wonder when they ___ for Beijing. I will go to the train station to see them off when they ___.
| A．leave, will leave | B．will leave, leave |
| C．will go, leave | D．go, leave |