Mark the letter A, B, C or D to indicate the...

Câu hỏi: Mark the letter A, B, C or D to indicate the option that best completes following exchanges. Câu 47. Two classmates are talking to each other.

A. They earn a lot of money.

B. They can live better than others.

C. They feel happy themselves. 

D. They don't have any worries.