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题目内容
（郑州工程技术学院-大学英语（2）.）
22.
In many countries now seat belts are _____ for the driver and front seat passengers at least.
(A) necessary
(B) in demand
(C) in need
(D) compulsory
In many countries now seat belts are _____ for the driver and front seat passengers at least.
(A) necessary
(B) in demand
(C) in need
(D) compulsory
参考答案