Trong các đa diện sau, đa diện không nội tiếp mặt cầu là 
 
A.tứ diện.
B.hình chóp ngũ giác đều.
C.hình hộp chữ nhật.
D.hình chóp tứ giác bất kỳ.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Students use the library’s computers to get ______________ to the Internet.
A.success
B.access
C.assess
D.recess

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
____________________ , please paint the windows before you leave.
A.If you have enough time
B.If you’ll have enough time
C.Unless you can have enough time
D.Unless you have enough time

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The development of social networks like Facebook gives way to _______________, which is really bad for the victims.
A.business advertising
B.social networking
C.cyber bullying
D.better communication

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
"I wish this city___ so noisy." "I know. I wish we ___ in the countryside."
A.weren’t – lived
B.isn’t – live
C.wasn’t – live
D.weren’t- live

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
If the oceans­­ _____ fresh water, there_____ plenty of water to irrigate all the deserts on earth.
 
A.were / would be
B.would be / were
C.is / will be
D.had been / would have been

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
_______ he passes the final exam, he will apply for the Ho Chi Minh Technology University.
 
A.but for
B.As long as
C.Unless
D.Supposed

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
I’m so busy. I ________ on an ecotour to Phu Quoc National Park if I ______ any holiday left.
A.would go/had
B.would go/have
C.will go/ have
D.will go/ had

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
What _____if there _____ a serious nuclear accident.
 
A.happens / were
B.would happen / were
C.will happen / was
D.would happen / had been

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
We’re going to be late if ___.
A.we not leave right now
B.we won’t leave right now
C.we didn’t leave right now
D.we don’t leave right now