Nowadays people sometimes separate their waste to make it easier for it ______.
| A．reusing | B．reused | C．reuses | D．to be reused |
With ________ successful launch of the first space lab module Tiangong-1, China’s space dream has taken ________ step closer to reality.
| A．the; a | B．不填; a | C．a; the | D．the; 不填 |
-–Do you think that we should make preparations for the competition in advance?
-–Exactly. ______.
| A．Actions speak louder than words |
| B．Fight no battle unprepared |
| C．Better late than never |
| D．A good beginning is half done |
-–Mary knows the city quite well.
--She______ well have been there before.
| A．need | B．could | C．should | D．may |
The past two years ______a sharp rise in oil price, which adds to the burden of auto transportation industry.
| A．has witnessed | B．witnessed |
| C．is witnessing | D．witnesses |
The moment ______Leo will never forget is ______he joined the Air Force
| A．when; that | B．that; that | C．that; when | D．when; / |