One winter day ____, he saw the tracks of animals in the snow and observed that the appearance of each one was different.
| A．while he hunting | B．while hunting |
| C．while he hunt | D．while hunted |
11. ____ you’re got a chance, you might as well make full use of it.
| A．Now that | B．After | C．Although | D．As soon as |
10. ________ her faults, she’s Arnold’s mother. Don’t be so rude to her.
| A．whatever | B．What | C．Whichever | D．Whenever |
9. Mary clapped her hand over her mouth _______ she realized what she had said.
| A．while | B．as soon as | C．suddenly | D．then |
8. _____ she goes, there are crowds of people waiting to see her.
| A．Wherever | B．however | C．Whichever | D．Whoever |
3. _______ I know the money is safe, I shall not worry about it.
| A．Even though | B．Unless | C．As long as | D．while |