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

A. neglecting

B. positive

C. active

D. interested

Câu 1: Be quiet or you'll wake the whole house!

A. still

B. noisy

C. peaceful

D. tranquil

Câu 2: 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 3: The business was acquired from Orion four years ago.

A. before

B. later

C. ahead

D. last

Câu 4: It is easy to open a shop but hard to keep it always open.

A. welcome

B. appear

C. switch

D. close

Câu 5: The wise man has long ears and a short tongue.

A. short

B. prolonged

C. high

D. crooked

Câu 6: We know not what is good until we have lost it.

A. find

B. count

C. guess

D. learn