英语单项选择１.＿unemployment is very high this time every year，so i

英语单项选择
１.＿unemployment is very high this time every year，so it is very difficult for you to find ＿work.
A.The;a B./;/ C.An;/ D.An;the
2.I wish to thank Professor Smith，without ＿help I would never have got this far.
A.who B.whose C.whom D.which
3.Your brother＿have hurried.To tell the truth，he arrived half an hour early.
A. needn't B.wouldn't C.mustn't D.couldn't
4.＿it is to jump into the sea and have a swim on a hot summer day.
A.How fun B.How funny C.What great fun D.What a great fun
5.How much time do you often spend＿English every day?
A.practicing B.to practice speaking C.practicing to speak D.on practcing to speak
6.This is one of the most interesting books＿I have ＿read.
A.that;never B.which;never C.that;ever D.which;ever
7.I remembered＿the door before I left the office，but forgot to turn off the lights.
A.locking B.to lock C.having locked D.to have locked