There would be not a good harvest of wheat in North China this year _______ the big snow.
| A．in spite of | B．apart from | C．due to | D．in case of |
Help others whenever you can ______ you will make the world a nicer place to live in.
| A．and | B．or | C．unless | D．but |
Most birds find it safe to sleep in the trees, but ____ they have eggs or young chicks, they don’t use a nest.
| A．why | B．how | C．unless | D．where |
___ the silence of the pauses, we could hear each other’s breathing and could almost hear our own heartbeats.
| A．In | B．For | C．Under | D．Between |
You will be successful in the interview ____ you have confidence.
| A．before | B．once | C．until | D．though |
The field research will take Joan and Paul about five months; it will be a long
time ____ we meet them again.
| A．after | B．before | C．since | D．when |