_______ of the students here _______ from the countryside.
| A．Three-fourths; are | B．Three-fourth; is |
| C．Three-fourths; is | D．Three-fourth; are |
With no one looking after my son, I have no choice but ____ this chance to go abroad.
| A．giving up | B．give up |
| C．to give up | D．gave up |
The missing boy was last seen ____ in the park with other children.
| A．play | B．playing |
| C．played | D．to play |
_____ to the nearest hospital, the injured boy was treated without delay and has been out of danger.
| A．Rush | B．Rushing |
| C．To rush | D．Rushed |
It is demanded that the system of buying train ticket in real names _____ out during the Spring Festival.
| A．will be carried | B．be carried |
| C．to be carried | D．should carry |
- You must have missed the last train to Guangzhou the other day.
- Oh, no, I _____.
| A．haven’t | B．hadn’t | C．don’t | D．didn’t |