An awful accident, however, _____occur the other day.
| A．does |
| B．did |
| C．has to |
| D．had to |
Whenever it is, it is right for a student to ______ the school disciplines．
| A．see | B．watch | C．notice | D．observe |
----- What do you think of the performance we saw last night, Jenny?
----- ______ I want to see it a second time．
A．That couldn’t be worse! B．It could be better
C．That couldn’t be better! C．It was just so-so．
He tried to cope with the ever-increasing burden of his work, but finally he _____ and had to take a complete rest．
| A．broke in | B．broke down | C．broke out | D．broke up |
The police tried to get some clues from the suspect, but he remained ______．
| A．silent | B．quiet | C．calm | D．still |
The engine of the ship was out of order and the bad weather _____ the helplessness of the crew at sea．
| A．turned out | B．resulted from | C．added to | D．made up |