1. The new policy, ______ is aimed at reducing traffic congestion, has been widely welcomed by citizens.
which
who
that
what
2. It was not until she got home ______ Jennifer realized she had lost her keys.
when
where
before
that
3. If I ______ you, I would take the opportunity to study abroad.
was
had been
were
am
4. The old man insisted that he ______ the wallet and that he ______ immediately.
not steal; be released
had not stolen; was released
had not stolen; be released
not steal; was released
5. ______ his excellent performance, he was promoted to manager at a young age.
Instead of
Because of
In case of
In spite of
6. The problem ______ at tomorrow's meeting is of great importance.
to be discussed
being discussed
discussing
discussed
7. Only by practicing every day ______ improve your spoken English quickly.
can you
you can
will you
you will
8. The number of people invited ______ fifty, but a number of them ______ absent for different reasons.
were; were
was; were
was; was
were; was
9. She didn't come to the party, ______ made her friends quite disappointed.
it
what
which
that
10. He is ______ a good teacher that all the students respect him.
too
such
so
very
11. I would rather you ______ me the truth yesterday.
had told
have told
told
tell
12. ______ from the top of the mountain, the city looks magnificent.
To see
Having seen
Seen
Seeing
13. The movie is worth ______ twice.
watch
to watch
being watched
watching
14. Not until the teacher came in ______ the noise in the classroom.
stopped the students
the students stopped
the students did stop
did the students stop
15. It is high time that we ______ measures to protect the environment.
took
take
have taken
will take
16. 翻译：无论多么困难，我们都必须完成任务。
Whatever difficult, we must complete the task.
No matter what difficult, we must complete the task.
However difficult is it, we must complete the task.
No matter how difficult it is, we must complete the task.
17. 翻译：正是由于他的帮助，我才通过了考试。
Thanks to his help, I passed the exam.
Because of his help I passed the exam.
It was his help that I passed the exam.
It was because of his help that I passed the exam.
18. The manager demanded that the report ______ by Friday.
was submitted
be submitted
submitted
submit
19. ______ for a long time, the book seems a bit outdated.
Not having been published
Having not published
Not published
Not being published
20. She is ______ a singer ______ a composer; she is famous for both.
both; and
either; or
neither; nor
not only; but also