---Dad is sleeping.Would you mind not_____ here?  ---_____Sorry___.
A.singing     B.to sing            C. sing

---Why not swim in the river?
---Oh, no. Our teacher told us______ here. It’s dangerous.
A.will swim       B. not to swim        C.not swim

The girl devoted all her time she had ______ others.  

The man went into the room, _____ rather strange.

Don’t keep the boy __________ in the rain. He will fall ill.

--- Does your brother like going hiking on Sundays?
--- No, he’d rather ______ books at home than ______ hiking.

When the teacher came in, he saw some boys _______ behind Daniel, _______ the computer games.

---Teenagers are sometimes made _________ ______ they are not_________．
--- I agree．

My family consider        a computer, which is considered       a great help in our work and study.

The boy isn’t old enough ________ with the difficult problem by himself.