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

Câu hỏi

I told Mary not to leave this window open.

A. told

B. not to

C. this

D. open

Đáp án
C. this

Câu hỏi thuộc Bài tập:

Ms. Dung Purple - Unit 9: Protecting the Environment - Grammar