According to the traffic rules, everyone is supposed ________ a seat belt in the car.
A.wearing
B.to wear
C.to be worn
D.wear
对258人提供帮助
be supposed to do sth.“应该做某事”。
According to the traffic rules, everyone is supposed ________ a seat belt in the car.
A.wearing
B.to wear
C.to be worn
D.wear
对258人提供帮助
be supposed to do sth.“应该做某事”。