As your instructor(教师) advised, you ought to spend your time on something ____ researching into.
| A．precious | B．worth | C．worthy | D．valuable |
Hard work and lack of sleep has _____ her beauty and youth in recent years.
| A．worn out | B．tried out | C．made out | D．sent out |
In order to _____ the development of the west of our country, many special policies have been made, such as encouraging people to go to work in the west.
| A．accelerate | B．accomplish | C．acknowledge | D．accompany |
----- Why don’t you do some shopping in the second-hand store ?
------ Well, the goods there are _____, but _____.
| A．more expensive; worse | B．more expensive; not as bad |
| C．cheaper; good enough | D．cheaper; not as good |
11. In the past few years, my hometown has changed_____ recognition.
| A．from | B．beyond | C．over | D．with |
Heart trouble is one of the most serious _____ of death among old people.
| A．reasons | B．troubles | C．illnesses | D．causes |