Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

Câu hỏi

His uncle has been in hospital since he ________ an operation on his knee.

A. had

B. was having

C. has

D. would have

Đáp án
A. had

Câu hỏi thuộc Bài tập:

ĐỀ SỐ 12 - VŨ MAI PHƯƠNG