Uncle George didn’t ______ until he was nearly fifty.
| A．settle down | B．put down | C．sit down | D．turn down |
__________ without friends __________ the most difficult challenge for Chuck while living on the island.
| A．How did he survive; were | B．How he survived; were |
| C．How did he survive; was | D．How he survived; was |
The new plane will __________ a series of test flights before it is put into use.
| A．go off | B．go down |
| C．go through | D．go up |
In April, thousands of holidaymakers remained __________ abroad due to the volcanic ash cloud.
| A．sticking | B．stuck |
| C．to be stuck | D．to have stuck |
There are __________ students in the school. But I don't know __________ the girls among them.
| A．a number of; a number of |
| B．the number of; the number of |
| C．a number of; the number of |
| D．a number; a number |
There __________ quantities of apples in the basket and there was __________ equipment in the room.
| A．were; a great many | B．was; quantities of |
| C．was; a great deal of | D．were; a quantity of |