Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is CLOSEST in meaning to each of the following questions.

Câu hỏi

Visitors must wear protective clothing at all times.

A. Under no circumstances should visitors take off their protective clothing.

B. Visitors must on no condition put on protective clothing.

C. Visitors can try wearing protective clothing.

D. Protective clothing must be paid for by visitors.

E10- I-learn- Unit 6 (2)