Câu 19: She is tired because she ------------- all day.

Question 1

D. studied

Answer

D. studied

Question 2

B.  has been studying

Answer

B.  has been studying

Question 3

C. had been studying

Answer

C. had been studying

Question 4

A. is studied

Answer

A. is studied

Câu hỏi: Câu 19: She is tired because she ------------- all day.