.
—Haven’t I told you that I like the beef well-done?
—Yes, but I _______ it longer than I usually do.
| A．was cooking | B．cooked | C．had cooked | D．will cook |
The reason for his success is ___________he worked very hard.
| A．why | B．that | C．whether | D．because |
--------- ___________did they visit the moon last month?
---------They visited it in a spaceship
| A．When | B．Where | C．What | D．How |
He was about to tell me the secret___________someone called him by his name.
| A．as | B．until | C．while | D．when |
He used to make a living_________playing music on festivals. Now he makes shoes__________ his own hands.
| A．by；with | B．on；by | C．with；with | D．by；by |
We can’t continue to pretend that the problem of pollution doesn’t___________in this city.
| A．exist | B．live | C．be | D．survive |