初三英語題，跪求正確答案

第3題是C。

1.what you have done isn't_helpful(help)to us at all.
2.who knows he way_Ddriving a car?
A.by B.with C.to D.of
3.yesterday morning I c_my English book at home .
A.missed B.forgot C.left D.put
4.I think that the increasing population is one of the greatest challenge_people have today.

helpful be helpful有幫助的
D way of driving a car開車的方式
C leave sth in/at +地點 把什么東西忘在什么地方
crisises 危機

祝你進步：）

helpful
of
left
challenges
僅供參考哦。