Since the time humankind started gardening, we _ _ to make our environment more beautiful.
| A．try | B．have been trying |
| C．are trying | D．will try |
Assistance dogs are trained to help disabled to live＿＿more independent life.
| A．/; a | B．a; the | C．the; the | D．the; a |
— Leo, I finally persuaded my mother.
— So we can go to the basketball club tonight.
| A．All the best. | B．Never mind. |
| C．Well done! | D．Good luck! |
It's everyone's desire that every effort ___ to realize the China Dream.
| A．was made | B．be made |
| C．will be made | D．would be made |
At first the officer ______ to make a statement, but later she agreed.
| A．reduced | B．postponed |
| C．declined | D．voted |
All Mrs Smith's efforts to tidy the room were _____ because her grandson soon made a mess of it again.
| A．at all costs | B．at random |
| C．in vain | D．in return |