—What has made him upset recently?
—_______ alone to face a troublesome milk case．
| A．Left | B．Being left | C．Having left | D．To leave |
In fact he lived a comfortable life，but he________about his fate all the time.
| A．is complaining | B．has complained |
| C．was complaining | D．had complained |
I prefer a house in a mountain village to________in such a large city as Changsha.
| A．that | B．it |
| C．this | D．one |
We should try our best to leave our generation a world better than________we were given.
| A．it | B．one |
| C．the one | D．those |
—Can you accompany your little brother to the post office now?
—________，if he is ready.
| A．By all means | B．No way |
| C．My pleasure | D．In no case |
As everybody knows，kangaroos are native________Australia and are often regarded as one of Australia’s national treasures.
| A．in | B．to |
| C．from | D．with |