By the time the new semester starts next month, we ______ all the preparation work for the campus activity.
will finish
have finished
will have finished
had finished
The ancient temple ______ for over 300 years, and it is still well-preserved today.
exists
has existed
existed
had existed
When I entered the classroom, my classmates ______ a heated discussion about the upcoming speech contest.
had
are having
were having
have had
Up to now, more than 50 new policies ______ to promote college students' employment.
are issued
have been issued
issued
had been issued
Hardly ______ the rain stopped when people went out to take a walk in the park.
Only by persistent practice ______ master English listening and speaking skills.
you can
can you
you could
could you
Never ______ such a wonderful campus environment before I entered this university.
I have seen
have I seen
I saw
saw I
______ we can finish the research project on time depends on everyone's joint efforts.
The fact ______ many young people prefer online learning is widely accepted nowadays.
This is the best movie ______ I have ever watched in my college life.
The student ______ homework was finished ahead of time won the teacher's praise.
______ you encounter difficulties in study, you can turn to your teachers and classmates for help.
Whenever
Unless
Until
Before
______ he is very busy with his studies, he still insists on doing exercise every day.
You will never make progress ______ you change your lazy learning habits.
if
because
unless
so that
Over the past few years, online education ______ rapidly, changing people's learning ways.
develops
developed
has developed
had developed
No sooner ______ I arrived home than it began to rain heavily.
Little ______ know that his small dream would come true one day.
he does
does he
he did
did he
The reason ______ he was late for class is that he missed the early bus.
______ is known to all, reading is the best way to enrich our knowledge.
The teacher suggested that we ______ more attention to grammar practice.
pay
paid
will pay
have paid
Up to now, I ________ (gain) much experience from group study.
Last term, he ________ (select) as the leader of the English club.
Only when we keep practicing can we make ________ (continue) progress.
There is no doubt that ________ (persist) learning improves our grammar.
So ________ (busy) is she with her study that she rarely hangs out.
By next summer, we ________ (finish) all the core courses.
The way ________ (we) learn English matters a lot.
Never ________ (give) up when facing academic challenges.
The news ________ (concern) our exam schedule spread quickly.
He told me that he ________ (read) this grammar book before.
只有坚持练习，你才能掌握英语语法。（要求使用倒装结构）
众所周知，阅读可以拓宽我们的视野。（要求使用定语从句）
到今年年底，我们将会完成全部复习任务。（要求使用将来完成时）
只要我们互相帮助，我们就能克服学习中的困难。（要求使用宾语从句+条件状语从句）