1、Engines are machines( )power or motion.
A.produce B.producing C.produced D.which producing
2、During this battle some soldiers were wounded，and some( ).
A.miss B.missed C.missing D.to miss
3、Weather( )，we will have a picnic tomorrow.
A.permit B.permits C.permitted D.permitting
4、The vacation ( ) over，the students came back to school.
A.is B.are C.was D.being
5、He is such a strange person；there's ( ) what he'll do next.
A.no knowing B.not to know C.not known D.being unknown
6、( )the door unlocked，I went in.
A.Finding B.Found C.Had found D.Have found
7、I hope you don't mind( )at your newspaper.
A.I look B.my looking C.I looking D.my to look
8、The United States has developed into a modern nation in a very
short time ( )with many other countries.
A.compares B.comparing C.to compare D.compared
9、When you find something in your writing that needs ( )，you should
mark it on the paper.
A.to be correcting B.correct C.to correct D.correcting
10、None of us objected to( )George to the birthday party.
A.invite B.inviting C.have invited D.invited