Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Bacteria that live in soil and water play a vital role in recycling carbon, nitrogen sulfur, and another chemical elements used by living things. 

A. soil and water

B. a vital role

C. another

D. living things

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Bacteria that live in soil and water play a vital role in recycling carbon, nitrogen sulfur, and another chemical elements used by living things.

A. soil and water

B. a vital role

C. another

D. living things

Giúp em với ạ Q27: Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction: This school has built since 1999, so it looks quite old now. A.has built B.since C.looks D.old Q27: Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction: You can’t have a chance to enjoy all these fruits if you were not living in this tropical country. A.can't have B.all these C.were not D.tropical Q28: Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction: Animals who are raised in zoos usually lose their natural instincts. A.who B.are raised C.natural D.instincts Q29: Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction: In my school, garbage is collected and send to recycling factories every day except Sunday. A.In B.is collected C.send D.except Q30: Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction: The teacher was very impressed with my improve in chemistry and physics. A.impressed with B.improve C.chemistry D.physics

Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction in each of the following questions.

The skin of mammals is a complexity organ that serves vital protective and metabolic functions.

A. is 

B. complexity organ       

C. vital                  

D. metabolic functions 

Mark the letter A, B, c or D on your answer sheet to show the underlined part that needs correction in each of the following questions
If the oxygen supply in the atmosphere was not replenished by plants it would soon be exhausted

A. supply

B. was

C. by plants

D. exhausted

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Alike (A) oxygen, which is chemically (B) changed by our bodies into carbon dioxide, nitrogen is  merely (C) exhaled back into (D) the air.

A. alike

B. chemically

C. merely

D. into

Q27: Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction:
This school has built since 1999, so it looks quite old now.
A.has built

B.since

C.looks

D.old

Q27: Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction:
You can’t have a chance to enjoy all these fruits if you were not living in this tropical country.

A.can't have

B.all these

C.were not

D.tropical

Q28: Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction:
Animals who are raised in zoos usually lose their natural instincts.

A.who

B.are raised

C.natural

D.instincts

Q29: Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction:
In my school, garbage is collected and send to recycling factories every day except Sunday.
A.In

B.is collected

C.send

D.except

Q30: Mark the letter A, B, C, or D on your answer sheet to show the underlined part that needs correction:
The teacher was very impressed with my improve in chemistry and physics.

A.impressed with

B.improve

C.chemistry

D.physics