—I think Tom is no longer a child and _______ enough.
—Yes, it’s time he made his own decisions.
| A．mature | B．stubborn |
| C．ridiculous | D．sensitive |
There are solid reasons for China to claim ownership of the Diaoyu Islands, which lie about 200 miles the eastern coast of our country.
| A．to | B．on | C．off | D．of |
My visit to your school is really an unforgettable experience, I will always treasure.
| A．that | B．one | C．it | D．what |
—Did you look up the time of the high-speed trains to Shanghai?
—Yes, the early train is to leave at 5:30 a.m.
| A．likely | B．possible | C．due | D．about |
Doctors strongly recommended that my father more exercise regularly instead of sitting still before a computer all day long.
| A．takes | B．take | C．took | D．had taken |
The more one is _______ the English-speaking environment, the better he or she will learn the language.
| A．exposed to | B．filled in | C．caught on | D．kept up |