Identify the one underlined word or phrase that must be changed to make the sentence correct.

Câu hỏi

If you do not understand what was written in the book, you could ask Mr. Pike.

A. If

B. understand

C. was written

D. could ask

Đáp án
D. could ask

Câu hỏi thuộc Bài tập:

E9- TĐ- Unit 7 - Practice 3