Sometimes he found _______very hard to fall asleep at night, so he went to see the doctor．
| A．him | B．this | C．that | D．it |
Always acting in a strange manner，Einstein must have ________ to people around to be mad.
| A．appeared | B．showed |
| C．thought | D．imagined |
Dark glasses are sometimes worn to ________ the eyes from strong sunlight.
| A．prevent | B．care |
| C．defend | D．protect |
Although different in many ways，the British and the Americans ________ many of the same customs.
| A．make | B．take |
| C．share | D．give |
The little chick the ________ earthworm，deciding whether to swallow it or let it go.
| A．glimpsed at | B．looked into |
| C．stared at | D．glared at |
There are some spelling mistakes in your composition，but ________ your composition is good.
| A．as a whole | B．on the whole |
| C．on one hand | D．on the other hand |