Mark the letter A, B, C or D on your answer sheets to show the underlined part that needs correction.

Assuring (A) the reliability and purity of the water supply (B) is one of the more significant challenges facing (C) an ever growing (D) world population.

A. Assuring

B. water supply

C. facing

D. growing

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.

It is believed that in the near future, robots will use to do things such as cooking. 

A. It is believed 

B. in the near future 

C. use to do 

D. such as 

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

(A) Believed that Jack (B) had got home (C) safely , we felt (D) relieved

A. Believed

B. had got

C. safely

D. relieved

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

It is generally believed that high level of carbon emissions lead to climate change

A. generally believed 

B. high level 

C. emissions 

D. to