They’ve finally decided to put an end to the long and bitter________between them and make peace.
| A．survey | B．conflict | C．concern | D．request |
－I’m thinking of the test tomorrow. I’m afraid I can’t pass this time.
－_________! I’m sure you’ll make it.
| A．Go ahead | B．Good luck | C．No problem | D．Cheer up |
Competitors are allowed to take a five-minute break every hour to eat，drink or do ________ is necessary
| A．which | B．that | C．where | D．what |
So far, all of the infected people are thought _______ the flu after direct contact with sick birds.
| A．to have caught | B．having caught | C．to catch | D．being caught |
A number of high buildings have arisen ______ there was nothing a year ago.
| A．when | B．where | C．before | D．until |
It was reported that a little boy under a destroyed house for three days was pulled out alive at last.
| A．trapped | B．being trapped | C．was trapped | D．had been trapped |