Question

To keep safe, everyone ________ to wear a seat belt in the car.

A. is supposed
B. supposes
C. supposed
D. will suppose

Answer 1

答案A
be supposed to的意思是“应该做某事”、“被期望做某事”，其后接动词原形，相当于be expected to do sth.；用在否定句中表示命令、禁止，意为“不准做某事”。四个选项是suppose的四种形式，根据题意“为了保持安全，乘车时每个人都应系上安全带”可选出正确答案为A。