1 . It’s helpful to put children in a situation ________ they can see themselves in different ways. (用适当的词填空)

3 . What __________(吸引) me most of the job is the opportunity to travel!

4 . Don’t ___________(暴露) your skin to the sun or your will be burnt.

5 . This is the factory____________we visited last week.

6 . They landed safely. Everything went on better than _____________(expect).

7 . —Will you be able to finish your project today?
—I hope _______.

8 . The Great Wall a_________ millions of tourists from all over the world every year.

9 . _______Amy didn’t know was that her kindness would set off a chain reaction.

10 . Learning another language is like stepping out of a door, ______I can look back and see more clearly my own language.

A．By which

B．through which

C．which

D．on which