Câu hỏi: Use water sparingly and keep water clean.

A. dusty

B. dirty

C. wicked

D. halfway

Câu 1: It's cool and quiet everywhere except in the kitchen.

A. windy

B. freezing

C. cold

D. hot

Câu 2: I love it when someone's laughter is funnier than the joke.

A. cry

B. shout

C. smile

D. frown

Câu 3: The plants and animals of the sea fall into three major groups.

A. small

B. chief

C. minor

D. main

Câu 4: Rich families find it easier to support their children financially.

A. Wealthy

B. Well-off

C. Privileged

D. Poor

Câu 5: The business was acquired from Orion four years ago.

A. before

B. later

C. ahead

D. last

Câu 6: It is easy to open a shop but hard to keep it always open.

A. welcome

B. appear

C. switch

D. close