Câu hỏi: We know not what is good until we have lost it.

A. find

B. count

C. guess

D. learn

Câu 1: Use water sparingly and keep water clean.

A. dusty

B. dirty

C. wicked

D. halfway

Câu 2: It's too far to ride to your grandmother's; you'd better take the bus.

A. remote

B. near

C. fast

D. besides

Câu 3: Keep only fish that you will eat; release the rest.

A. catch

B. hold

C. take

D. have

Câu 4: Last night they stayed at home and watched TV.

A. day

B. noon

C. midnight

D. morning

Câu 5: The plants and animals of the sea fall into three major groups.

A. small

B. chief

C. minor

D. main

Câu 6: The wise man has long ears and a short tongue.

A. short

B. prolonged

C. high

D. crooked