Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.We ____ go to work by car. Sky train is a wise choice during rush hour.

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

We ____ go to work by car. Sky train is a wise choice during rush hour.

ought to

mustn't

shouldn't

have to

Giải thích

Đáp án đúng là: C

Dịch: Chúng ta không nên đi làm bằng ô tô. Tàu điện trên cao là một lựa chọn sáng suốt trong giờ cao điểm.