Nuclear ______ be really dangerous at times even though it’s a nice energy in general.
| A．shall | B．should | C．can | D．must |
Though the girl ________ to learn Japanese，she couldn’t catch up with her classmates.
| A．made effort | B．made all her efforts |
| C．took every effort | D．gave her efforts |
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 |