Chọn đáp án đúng:
Hình dưới đây có mấy con chó?
2
3
4
5
A.answer3
B.
C.
D.

Đếm số hình trong khung 10 ô
Có bao nhiêu hình trong khung?
 
 
 
A.7
B.
C.
D.

Đếm số hình trong khung 10 ô
Có bao nhiêu hình trong khung?
 
 
 
 
 
 
 
 
A.2
B.
C.
D.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The phone bill this month cost a fortune. You _______________ all the time, __________?
A.are calling/ aren’t you
B.have been called/ have you
C.have been calling/ haven’t you
D.have called/ haven’t you

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The company eventually got over the crisis. Its revenue becomes _________ day by day.
A.more better and better
B.more and more good
C.gooder and gooder
D.better and better

Cho khối lập phương $ABCD.A'B'C'D'.$ Đoạn vuông góc chung của hai đường thẳng chéo nhau $AD$ và $A'C'$ là :
A.$BB'.$     
B.$DA'.$  
C.$AA'.$    
D.$DD'.$

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
I …. my girlfriend for a couple of years and during that time I ... many changes in her personality.
A.have seen – have seen
B.have been seeing – have seen
C.have seen – have been seeing
D.have been seeing – have been seeing

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
This strategy seems to be good. Sales of our products (increase)…………..for some time.
A.increased
B.are increasing
C.has increased
D.has been increasing

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
David and Beth ______ some problems in their relationship lately so they ______ to a marriage counselor every week for the last two months. I hope they sort it out.
A.have been having – have gone
B.have had – have been going
C.have had – have gone
D.have been having – have been going

Cho hình chóp $S.ABCD$ có đáy là hình vuông cạnh $a.$ Đường thẳng $SA$ vuông góc với mặt phẳng đáy,$SA=a.$ Khoảng cách giữa hai đường thẳng$SB$và$CD$nhận giá trị nào trong các giá trị sau?
A.$a.$
B.$a\sqrt{2}.$
C.$a\sqrt{3}.$
D.$2a.$