Every possible means __________ to save the wounded soldier up to now.
| A．was tried | B．were tried |
| C．have been tried | D．has been tried |
I can’t quite remember ___ you started doing the work.
| A．that is was when | B．when it was that | C．when was it that | D．that was it when |
What do people in China often have __ dinner?
| A．to | B．at | C．with | D．for |
John was so sleepy that he could hardly keep his eyes ___.
| A．open | B．to be opened | C．to open | D．opening |
--___ do you want? --I want a book on history.
| A．Which books | B．What book | C．How many books | D．Whose book |
Shortly after the accident, two ___ police were sent to the spot to keep order.
| A．dozens of | B．dozens | C．dozen | D．dozen of |