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

A. find

B. count

C. guess

D. learn

Câu 1: The speaker likes to have an attentive audience.

A. neglecting

B. positive

C. active

D. interested

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

A. Wealthy

B. Well-off

C. Privileged

D. Poor

Câu 3: 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 4: As long as you are still alive, you will definitely encounter the good things in life.

A. well

B. surviving

C. sick

D. dead

Câu 5: She had a cozy little apartment in Boston.

A. uncomfortable

B. dirty

C. lazy

D. warm

Câu 6: The business was acquired from Orion four years ago.

A. before

B. later

C. ahead

D. last