Mark the letter A, B, C, or D to indicate the underlined part that needs correction in each of the following questions.

Câu hỏi

I thought I recognized the assistant which served us.

A. thought

B. recognized

C. which

D. us

Đáp án
C. which

Câu hỏi thuộc Bài tập:

E9- TĐ- Đề ôn số 5