Câu hỏi:

The dentist ___________ a cavity in his tooth.

A. did      

B. made      

C. filled

Câu 1:

Every year, millions of people catch the ___________.

A. headache      

B. stomachache      

C. common cold

Câu 2:

Children are ___________ of going to see the doctor.

A. afraid      

B. enjoyable     

C. favorite

Câu 3:

I have to take care of ___________ when I am away from home.

A. I      

B. myself      

C. themselves