The research that scientists have carried out in the past few years ______ to find ways to reduce pollution.
The young man standing at the gate, who ______ for the manager, has waited for nearly two hours.
is waiting
was waiting
has been waiting
had waited
It is reported that many ancient buildings in this area ______ carefully protected since the local government passed the new rule.
are
were
have been
had been
The teacher told us that the earth ______ around the sun, which is a basic truth in geography.
moved
moves
will move
was moving
Anyone ______ wants to take part in the competition must hand in his application before Friday.
By the time the rescue team arrived at the village, most of the injured people ______ to the nearby hospital.
were sent
have been sent
had been sent
would be sent
She wondered if the project that they had spent months preparing ______ successfully the next month.
will finish
would finish
will be finished
would be finished
If you ______ harder at your study, you would have passed that difficult exam last term.
worked
have worked
had worked
work
The valuable painting ______ in the museum will be on show for only one month.
being displayed
displaying
to display
having displayed
The manager pretended ______ about this matter when his assistant mentioned it in the meeting.
not to know
not knowing
to not know
knowing not
The suggestion that we ______ a break after finishing the heavy work was warmly accepted by all members.
took
take
will take
would take
All the work ______ ahead of schedule, we decided to take a three-day holiday.
was finished
finishing
having been finished
had finished
She is used to ______ a cup of warm tea before starting her work every morning.
drink
drinking
drank
drunk
I remember ______ this famous writer at an international book fair held in Shanghai last summer.
______ from the top of the mountain, the small village looks much more beautiful than we expected.
二、用括号单词适当形式填空（10小题，每题3分，共30分）
He ________(live) in this quiet town since he graduated from university in 2021.
Listen! Someone ________(knock) at the front door of the old wooden house.
The stone bridge that crosses the river ________(build) by local villagers one hundred years ago.
When I called you last night, you ________(watch) a documentary about environmental protection.
We ________(not finish) the task that our teacher assigned yet.
More wide roads ________(build) to connect small towns and big cities in our city soon.
The boy was made ________(clean) the whole classroom because of his careless mistake.
By last summer, they ________(build) five community libraries for the neighborhood.
The book written by the famous writer is worth ________(read) several times.
________(finish) all his daily work, he went home to have dinner with his family.
直到完成所有准备工作，我们才能动身前往目的地。（句型提示：not…until… 直到……才）
人们普遍认为，好习惯对一个人的成长有着深远的影响。（句型提示：It is + 过去分词 + that从句 主语从句）
无论遇到什么困难，我们都不该轻易放弃自己的梦想。（句型提示：no matter what 引导让步状语从句）
当我们到达剧场的时候，演出已经开始半小时了。（句型提示：when引导时间状语从句；主句使用过去完成时）
如果给予足够的耐心和练习，任何人都能掌握这门语言。（句型提示：过去分词作条件状语）