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

In my opinion, the computer is the greatest machine ______ has ever been invented.

A. that

B. of which

C. who

D. whom

Đáp án
A. that

Câu hỏi thuộc Bài tập:

E10- I-learn- Thi giữa kì II