Câu hỏi: The roofs are covered ............. red tiles.

A. of

B. with

C. to

D. by

Câu 1: This organization is quick ... sending relief goods to the flooded areas.

A. with

B. at

C. for

D. about

Câu 2: We were very doubtful .............. his ability.

A. about

B. with

C. for

D. to

Câu 3: Boys! Put your toys ............ It is time to go to bed. Don't stay ............. late.

A. off / on

B. away / up 

C. down / off

D. around / for

Câu 4: Clearing forests for timber has resulted ....... the loss of biodiversity.

A. with

B. at

C. in

D. for

Câu 5: Clean air is necessary ........... our health.

A. to

B. for

C. on

D. with

Câu 6: Can you help me, please? I can't see the differences .......... these words.

A. from

B. in

C. between

D. about