He will come to understand your efforts sooner or later. It's just a matter of_______.
| A．time | B．value | C．luck | D．fact |
—How many birds can you see in the trees?
—I can see _________ birds in them.
| A．hundreds of | B．five hundreds |
| C．hundred of | D．five hundreds of |
A dog robot could help ____ the room.
| A．cleaning | B．getting | C．clean | D．get |
—Where is Miss Wang?
—She went to Hainan Island last week and will return _________ six days.
| A．ago | B．later | C．behind | D．in |
There will be ____ cars and ____ pollution twenty years later.
| A．many, few | B．little, few |
| C．less, more | D．fewer, less |
—What is a resolution？—It’s
| A．a promise | B．an action |
| C．a message | D．a letter |