_____you may have, you should gather your courage to face the challenge.

A． However a serious problem

B． What a serious problem

C． However serious a problem

D． What serious a problem

[单选题]I should have told you! You ______ the entire house. Our cleaning lady phoned she's coming tomorrow.A． didn't need to cleanB． needn't have cleanedC． don't need to cleanD． mustn't have cleaned

[主观题]What should you do if you have to go back home late?._____________________________________________

[单选题]You should be ashamed ________ what you have done.A.to B.of C.by D.at

[主观题]When you're _t_________ ,you should have some water．

[单选题]You should have been more patient ________ 怎么选择Youshouldhavebeenmorepatient________thatcustomer;I’msurethatsellinghimthewatchwasapossibility.A．)ofB)withC)forD)at

[单选题]You should have [blended]the butter with the sugar thoroughly before you he

[单选题]You should have [blended]the butter with the sugar thoroughly before you he

[单选题]I should like to have you ______ my partners.A． metB． meetC． meetingD． to mee

[单选题]You should work for __________ if you become an editor of the magazine.A． just nine hours a dayB. no less than nine hours a day C. about ten hours a dayD. less than 25 hours a week

[单选题]You may use the room as you like ___ you clean it up afterwards.A． so far as B. so long asC. in caseD. even if