. Do you know________there is a small river for us to swim in?

---Excuse me, Sir, could you tell me how to go to the railway station?
---Sorry, you’d better ask, I’m afraid, ____ is a native.

_____ is known to all, the age _______ children can go to school is seven.

. Put the books back _______ they belong after you have finished them.

. Some of the scientists held the point ______ the book said was right.

News came __________ the H1N1 virus may spread more quickly than was thought.

As was expected, only five people turned up at the party, __________ disappointed the hostess very much.

______ is it that metals plays such an important part in our daily life?

They have the right to check ______ the will is valid(有效的), of course.

. It was the hardship _____ he experienced as a young man _____ made him what he is today.