Câu hỏi: Optimists believe that in future we will be living in a cleaner environment, breathing fresher air and eat healthier food.

A. Optimists believe

B. in future

C. living in a cleaner

D. eat healthier food

Câu 1: In July of 1861, Pat Garett killed Billy the Kid in a house close Fort Summer.

A. close Fort Summer

B. of

C. In

D. in a house

Câu 2: He passed the exams with high scores, that made his parents happy.

A. passed

B. with

C. that 

D. happy

Câu 3: There are many reasons why a particular species may become endangering.

A. endangering

B. may

C. a

D. reasons why

Câu 4: Both Mr. and Mrs. Smith are explaining the children the rules of the game.

A. Both Mr. and Mrs. Smith

B. are

C. explaining

D. the children the rules of the game

Câu 5: A child of noble birth, his name was famous among the children in that school.

A. of

B. his name

C. among

D. in that

Câu 6: Hardly did he enter the room when all the lights went out.

A. did he enter

B. when

C. the lights

D. went