He has already obtained a scholarship.
We have seen that film before.
Have they found the missing child yet?
如often,sometimes,ever,never,twice,on several occasion等： Have you ever been to Beijing
I have never heard Bunny say anything against her.
I have used this pen only three times. It is still good.
4. 现在完成时还往往可以同包括现在时间在内的时间状语连用， 如now,up to these few days/weeks/months/years,this
morning/week/month/year,just,today,up to present,so far等： Peter has written six papers so far.
Man has now learned to release energy from the nucleus of the atom.
1、Both his parents look sad .
Maybe they _________what's happened to him.
A. knew B. have known C. must know D.will know
2、He has _______ been to Shanghai， has he ？
A. already B.never C.ever D. still
3、Have you met Mr Li ______？
A. just B. ago C.before D. a moment ago
4、The famous writer _____ one new book in the past two year.
is writing B.was writing C.wrote D.has written
5、—Our country ______ a lot so far.
—Yes. I hope it will be even ______.
A. has changed ； well B. changed ； good
C. has changed ； better D. changed ； better
6、Zhao Lan ______already ______in this school for two years.
A. was ； studying B. will ； study
C. has ； studied D. are ； studying
7、We ______ Xiao Li since she was a little girl.
A. know B. had known C. have known D. knew
8、Harry Potter is a very nice film .I_______ it twice.
A. will see B. have seen C. saw D.see
9、—These farmers have been to the United States. —Really ？ When _____ there ？
A. will they go B. did they go
C. do they go D. have they gone
10、—______ you ___ your homework yet？
—Yes . I _____ it a moment ago.
A. Did； do； finished B. Have； done； finished
C. Have； done； have finished D. will； do； finish
11、 His father ______ the Party since 1978.
A. joined B. has joined C. was in D. has been in
12、—Do you know him well ？
— Sure.We _________ friends since ten years ago.
A. were B. have been C. have become D. have made
13、—How long have you ____ here？
—About two months.
A. been B. gone C. come D. arrived
14、Hurry up！ The play __________ for ten minutes.
A. has begun B. had begun
C. has been on D. began
15、 It _____ ten years since he left the army.
A. is B. has C. will D. was
16、 Miss Green isn't in the office .
she_______ to the library.
A.has gone B. went C.will go D. has been
17、My parents ______ Shandong for ten years.
A. have been in B. have been to
C. have gone to D. have been
18、The students have cleaned the classroom，_____？
A. so they B. don‘t they C. have they D. haven’t they
19、_____has Mr White been a member of Greener China since he ____ to China？
A. How soon， comes B. How often， got
C. How long， came D. How far， arrived
20、 His uncle ____ for more than 9 years.
A. has come here B. has started to work
C. has lived there D. has left the university