—A medical team was sent to Japan by air five hours ago.
—So they ______________ have arrived by now. The flight usually takes four hours or so.
| A．might | B．could | C．must | D．need |
It was after he got what he had wanted he realized it was not so important.
| A．that | B．when | C．since | D．as |
There was time Iraq was one of the strongest countries in the world.
| A．a；when | B．a；that | C．the；that | D．the；when |
—My sister is very upset today.
—It’s your fault .You the bad news to her yesterday.
| A．should tell | B．should have told | C．shouldn’t have told | D．must tell |
After series of unsuccessful attempts, he has finally passed driving test.
| A．不填；the | B．a；the | C．the；a | D．不填；a |
In the face of danger, we need to stay ____. Only in this way can we come up with good solutions.
| A．still | B．quiet | C．calm | D．silent |