Choose the answer among A, B, C, D to complete each of the sentences below:
500 years ago, the average human ________ was about 40 years.
A.life cycle
B.life length
C.lifetime
D.lifespan

Choose the answer among A, B, C, D to complete each of the sentences below:
Most students who were asked felt that _______ respect in the classroom was essential.
A.actual
B.annual
C.mutual
D.continuous

Choose the answer among A, B, C, D to complete each of the sentences below:
His brother refuses to even listen to anyone else's point of view. He is very___
A.open-minded
B.narrow-minded
C.absent-minded
D.kind-hearted

Choose the answer among A, B, C, D to complete each of the sentences below:
We would like to see closer ______ between parents and schools.
A.coordination
B.coeducation
C.coexistence
D.cooperation

Choose the answer among A, B, C, D to complete each of the sentences below:
I shook hands and ______ a few words with the manager.
A.expressed
B.uttered
C.converted
D.exchanged

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
As John _______ enjoyed doing research, he never could image himself pursuing other careers.
A.totally
B.thoroughly
C.extremely
D.utterly

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
The police are trying to determine the _______ of events that led up to the disappearance of the child.
A.courses
B.series
C.ranges
D.sequences

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Antartica is the _____ place in the world.
A.coldest
B.colder
C.most cold
D.more cold

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
Halong has …………… scenery in Vietnam.
A.nicer
B.the nicest
C.the nicer
D.nicest

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
The Sahara is _____ desert in the world.
A.hotter
B.the hottest
C.hottest
D.the hotter