III. Choose the answer A, B, C or D to complete sentences.
Saving species from becoming extinct is crucial for our health and the future of our children.
A.dangerous
B.endanger
C.endangering
D.endangered

III. Choose the answer A, B, C or D to complete sentences.
Cheetah’s tail is during fast running, because it balances the animals and allows fast and sudden turns which happen often when the prey tries to escape.
A.essential
B.basic
C.adequate
D.sufficient

III. Choose the answer A, B, C or D to complete sentences.
Illegal hunting in Namibia, Zimbabwe, and Botswana, puts Africa elephants of extinction.
A.in the verge
B.on the verge
C.on brink
D.in brink

III. Choose the answer A, B, C or D to complete sentences.
They the new bridge by the end of the year.
A.will complete
B.will have completed
C.have complated
D.had been completing

III. Choose the answer A, B, C or D to complete sentences.
By the time you finish cooking they their homework.
A.will have done
B.are doing
C.have been doing
D.have done

III. Choose the answer A, B, C or D to complete sentences.
The better the weather is, .
A.the beaches get the more crowded
B.the beaches get the most crowded
C.the most crowded the beaches get
D.the more crowded the beaches get

She is very good _______ tennis. She never loses when playing with her friends.
A.for
B.at
C.in
D.about

III. Choose the best answer to each of the following questions.
Next December, they for twenty years.
A.will have been married
B.have been married
C.are married
D.were married

III. Choose the best answer to each of the following questions.
By the year 2050, computers teachers.
A.replace
B.will replace
C.will have replaced
D.have replaced

A.history
B.biology
C.chemistry
D.mystery