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 ______ for a long time, the book seems a bit outdated.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