【题目1】Passengers ________ keep alert(警惕的) when we are offered the car－hailing service(网约车服务)．
A. are allowed to B. are supposed to
C. are not supposed to
【题目2】You should not eat this kind of food ________ your hands.
A. by B. with C. in
【题目3】Teenagers have to be 18 years old before they ________ to drive a car.
A. are allowed B. are asked C. are considered
【题目4】—Will you take part in the football game on Sunday afternoon?
—Yes，but it has been ________because of the rain.
A. refused B. controlled C. cancelled
【题目5】He ________ for ten years.
A. has been married B. married C. got married