一． 单项选择（10分）
( )1 .We often hear Mary_____in her bedroom.
A. to sing B. sing C. sang D. singing
( )2 .Pay attention______the weather before you go out.
A. to B. of C. at D. in
( )3. ---Are you going to go shopping this afternoon?
---No，I'm _____ tired _____go．
A. so, to B. enough, to C. too, to D.／，to
( )4. ---______go to the cinema together with me?
----Good idea.
A. How about B．Why do you C．Why not D．What about
