3 . It was not until she collected enough material_______to create her new novel.

A．did she begin	B．when she began
C．that she began	D．that did she begin

4 . It was when the private company successfully launched astronauts into space__________I knew it would open up more opportunities in the space industry.

A．which

B．how

C．where

D．that

5 . John's success has nothing to do with good luck. It is years of hard work _________ has made him what he is today.

A．what	B．which
C．where	D．that

6 . If you have a job, ______ yourself to it and finally you’ll succeed.

A．do devote	B．to devote
C．devoting	D．devoted

7 . —Do you know ____ made him successful in his career?
—Yes. His hard work and determination, of course.

A．what it was that

B．what was it that

C．it was what that

D．was it what that

8 . Why! I have nothing to explain.        you want me to say?

A．What is it that	B．What it is that
C．How is it that	D．How it is that

9 . It was not until he came back _____ he knew the police were looking for him.

A．which

B．since

C．that

D．before

10 . An awful accident_____，however，occur the other day.

A．does

B．did

C．has to

D．had to