Câu hỏi: At times, this can be risky, and the keepers have been injured and one has been killed.

A. good

B. useful

C. healthy

D. secure

Câu 1: 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 2: Advanced students need to be aware of the important of collocation.

A. of high level

B. of great important

C. of low level

D. of steady progress

Câu 3: It's cool and quiet everywhere except in the kitchen.

A. windy

B. freezing

C. cold

D. hot

Câu 4: The wise man has long ears and a short tongue.

A. short

B. prolonged

C. high

D. crooked

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

A. before

B. later

C. ahead

D. last

Câu 6: Last night they stayed at home and watched TV.

A. day

B. noon

C. midnight

D. morning