Tom ________ in the library every night over the last three months.
| A．works | B．worked |
| C．has been working | D．had been working |
At first, they worried about the situation but things ______quite well.
| A．went on | B．carried on | C．worked out | D．tried on |
Only when our country has aircraft carriers _______ our distant islands more effectively.
| A．we can guard | B．can we guard | C．we guard | D．do we guard |
Maria is fond of all kinds of sports, but she likes swimming ________.
| A．in practice | B．in general | C．in fact | D．in particular |
It was so dark in the theatre that I could hardly ________ my friend.
| A．turn out | B．bring out | C．call out | D．pick out |
— Is it my age ______the boss minds?
—I’m afraid so. He will consider ______ necessary to have an experienced assistant.
| A．which；it | B．that；it | C．which；that | D．that；that |