You are tired. a rest?
| A．Why stop to have | B．Why not stop to have |
| C．Why not stop having | D．Why don’t stop to have |
I don’t know _____
A. where does he come from
B. what is his name
C. how old he is
Money is important in my life. But it isn’t _____ to me.
A. everything B.nothing C.anything
---Which sign can’t be seen on the road? ---_____.
A. 
B. 
C. 
--- Look, the factory is pouring waste water into the river.
--- That’s terrible! Why not _____ them _____ that?
A. keep; doing
B.to keep; to do
C.stop; doing
--- Work hard,_____ you won’t do well in your lessons. --- OK. I will.
A. and B.so C. or