You can only be sure of you have at present; you cannot be sure of something ___ you might get in the future.
| A．that; what | B．what; / | C．which; that | D．/; that |
It was not until midnight _______ they reached the camp site.
| A．when | B．while |
| C．that | D．as |
Tom was about to close the windows ______ his attention was caught by a bird.
| A．if | B．when | C．and | D．till |
By the end of this month, we surely _________ a good solution to the problem.
| A．have found | B．will been found |
| C．will be found | D．are finding |
Now that she is out of a job, Lucy ________ going back to school, but she hasn’t decided yet.
| A．has considered | B．is going to consider |
| C．considered | D．has been considering |
On hearing the ________ result, all the students of Class Two couldn’t help _______.
| A．satisfied; to jump | B．satisfactory; to jump |
| C．satisfied; jumping | D．satisfactory; jumping |