Sorry，Miss Liu．I left my workbook at home．Must I hand it in today？
No，you ______．You ______ bring it here tomorrow．（ ）
A．mustn't； shouldB．can't；must
C．mustn't；mayD．needn't；can
Recently people in China ____ take much money on shopping because they often use the mobile phone instead．（ ）
A．needn'tB．shouldn'tC．mustn'tD．can't
Anna is preparing for the coming exam， so she has to ____ the invitation to the party．（ ）
A．turn onB．turn downC．turn offD．turn up
____ have you talked with your friends on the phone？
Since I finished my homework．（ ）
A．How farB．How oftenC．How soonD．How long
Oh， dear! I can't find my key to the office．
Don't worry． I think you might ________ it in your car．（ ）
A．offerB．forgetC．borrowD．leave
Jerry will succeed in working out the problem ____ he gives up．（ ）
A．IfB．becauseC．soD．unless