He is the first person you can think of to rely on, for he is always willing to ________ whoever is in trouble.
| A．cut out | B．figure out | C．test out | D．help out |
—_____I stay with you?
— Well, I would rather you_____me alone for a while.
| A．Will; leave | B．Shall; leave | C．Will; left | D．Shall; left |
Mr. Black is a careful and experienfed engineer, so he is often _____ to finish some challenging tasks.
| A．appreciated | B．approached | C．appointed | D．agreed |
China is a peace-loving country and _____no circumstances _____ first use nuclear weapons.
| A．on; will China | B．on; China will |
| C．under; will China | D．under; China will |
In the past decades, sea ice _____in the Arctic as a result of global warming.
| A．had melted | B．has been melting | C．melted | D．is melting |
In our country the cold weather in the north_____ sharply _____the hot weather in the south.
| A．combines；with | B．relates；to | C．compares；with | D．contrasts；with |