Question

【题目】—It's necessary _______ us _______ obey the traffic rules.
— You're right. Everyone has but only one life.
A.for; to
B.for; for
C.to; to
D.to; for

Answer 1

【答案】A
【解析】句意：——我们遵守交通规则是必要的。——你是对的，每个人都有一次生命。It's+adj. (+for sb. )+to do sth. 为固定句型。故选A。