﹣Our computer is working again!
﹣Yes.Our IT teacher it.It took him about an hour.
A．has fixedB．will fixC．is fixingD．was fixing
Over the past few months，Chinese COVID vaccines （疫苗） ________ in many other countries.
A．have arrivedB．arrived
C．will arriveD．had arrived
The documentary Aerial China《航拍中国》is wonderful.So far，I ______ it three times.（ ）
A．watchedB．will watch
C．have watchedD．watch
—Miss Zhang seems quite familiar with Yunnan Province.
—Don't you know？She ________ a town school there as a volunteer teacher for over 2 years.（ ）
A．is inB．has gone to
C．has been inD．has been to
It ________ 100 years since the Communist Party ________ .（ ）
| A． |
was；was founded |
B． |
has been；was founded |
| C． |
has been；founded |
D． |
was；founded |
-It is reported that the First Flight Ceremony of Heze Mudan Airport was held on April 2nd，2021.
-Yes.Great changes ___________ in my hometown since I left home.
| A． |
have taken place |
B． |
were taken place |
| C． |
took place |
D． |
|
﹣﹣﹣________ your homework？
﹣﹣﹣Not yet.I'll finish it in ten minutes.（ ）
| A． |
Did you finish |
B． |
Have you finished |
| C． |
Will you finish |
D． |
Do you finish |
—Mum，where is David？
—He ______ to see the science fiction film Back to the future.
A．is goingB．goesC．has goneD．was going
一Alex，go and clean your bedroom.
一I ________________ it.It's tidy and clean now.
A．have cleanedB．cleaned
C．clean
﹣﹣﹣Where is Catherine？ I haven't seen her for days．
﹣﹣﹣She Wuhan． She'll be back next week．（ ）
| A． |
has gone to |
B． |
has been to |
| C． |
have gone to |
D． |
have been to |
—Hey!Kate，what about your last winter camp in Hainan？
—Oh!It_______ some sweet memories in my heart in the past several months.
A．leavesB．is leavingC．has leftD．will leave
﹣﹣﹣Would you like something to drink？
﹣﹣﹣No，thanks.I_______ some tea already.（ ）
A．have drunkB．was drinking
C．will drinkD．drink
I saw Julia in April and I ______ her since then.（ ）
A．don't seeB．didn't see
C．won't seeD．haven't seen
—Do you know Mount Wudang in Shiyan？
—Yes，I _________ it twice.It's fantastic.（ ）
A．had climbedB．climb
C．climbedD．have climbed
David Attenborough 40 documentaries over the past 67 years.A Life on Our Planet is his latest work.（ ）
A．makesB．madeC．has madeD．is making
China （win） lots of high praise since we turned the sand into forests.
The world （not face） such a big challenge since World War II.