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

Câu hỏi

Please ask the restaurant clientele _______ in the no smoking area.

A. not to smoke

B. not smoking

C. don't smoke

D. not smoke

Đáp án
A. not to smoke

Câu hỏi thuộc Bài tập:

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