单项选择问题( )1.Nobody noticed the thief slip into the house beca

单项选择问题
( )1.Nobody noticed the thief slip into the house because the
lights happened to_____.
A.be put up B.give in C.be turned on D.go out
( )2.Why do you want a new job_____you've got such a good one
already?
A.that B.where C.which D.when
( )3.It isn't quite_____whether she will take the advice.
A.sure B.right C.certain D.exact
( )4.Dr.Bethune began to work the_____he arrived at the front.
A.moment B.place C.way D.reason
( )5._____the children to bed,she began to correct the students'
exercises.
A.Sending B.Being sent C.Sent D.Having sent
( )6.Mary_____a book about China last year but I don;t know
whether she has finished it.
A.has written B.wrote C.had written D.was writting