—He looks very happy. He ____have passed the exam,
—I guess so. It’s not difficult after all.
| A．should | B．could | C．must | D．might |
The hungry man eats his food _______he hadn ' t eaten for a week.
| A．as if | B．even though | C．such as | D．like as |
We must ________ our task, however hard it is.
| A．carry about | B．carry off | C．carry on | D．carry away. |
________ the same mistake again made his parents very angry.
| A．His being made | B．He had made | C．He had making | D．His making |
The police are________to conclude that the cause of fire had been a cigarette end.
| A．probable | B．possible | C．maybe | D．likely |
I don‘ t know how to use a computer,_________.
| A．and my sister doesn ‘ t neither | B．nor my sister can |
| C．nor does my sister | D．and my sister does either |