38. Mr. Black ______ home because his briefcase is still on the desk.
| A．mustn’t have gone | B．can’t have gone |
| C．shouldn’t have gone | D．needn’t have gone |
—What do you admire the spaceman ______?
—His bravery to travel around the earth ______ a spaceship all alone.
| A．for; in | B．to; by | C．for; by | D．as; in |
Are you ______ your son has difficulty in studying at school?
| A．aware of | B．aware that | C．knowing that | D．aware of that |
The number of deaths from heart disease will be reduced greatly if people ______ to eat more fruit and vegetables.
| A．persuade | B．will persuade | C．will be persuaded | D．are persuaded |
Sent to the zoos in Beijing and other cities, the monkeys are reported ______.
| A．to settle down | B．to settle in |
| C．to have settled in | D．to have settled down |
This year there is ______ rain and the trees are ______ fruits.
| A．a plenty of; abundant in | B．an abundance; abundant |
| C．an abundance of; abundant in | D．lots of; abundant |