Câu hỏi: Developing new technologies are time-consuming and expensive.

A. developing 

B. technologies

C. are

D. time-consuming

Câu 1: Regarding as one of the leading figures in the development of the short story, O Henry is the author of many well- known American novels.

A. Regarding as

B. leading figures

C. the

D. novels

Câu 2: The assumption that smoking has bad effects on our health have been proved.

A. that

B. effects

C. on

D. have been proved

Câu 3: Some species of bats are dormant each days and active every night.

A. species of

B. each days

C. every night 

D. are dormant

Câu 4: What we know about certain diseases are still not sufficient to prevent them from spreading easily among the population.

A. What we know

B. are

C. from spreading

D. among

Câu 5: A novel is a story long enough to fill a complete book, in that the characters and events are usually imaginary.

A. long enough

B. complete

C. that

D. imaginary

Câu 6: Mrs. Stevens, along with her cousins from Canada, are planning to attend the firework display in Da Nang, Vietnam.

A. with

B. her cousins

C. are

D. to attend