Câu hỏi: How different a picture we now have of the ocean as the sea has begun to reveal its secrets.

A. public

B. opening

C. knowledge

D. schooling

Câu 1: The business was acquired from Orion four years ago.

A. before

B. later

C. ahead

D. last

Câu 2: Rich families find it easier to support their children financially.

A. Wealthy

B. Well-off

C. Privileged

D. Poor

Câu 3: Be quiet or you'll wake the whole house!

A. still

B. noisy

C. peaceful

D. tranquil

Câu 4: 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 5: We can do something to save the earth.

A. kick

B. shoot

C. throw

D. destroy

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

A. short

B. prolonged

C. high

D. crooked