.希望给出正确答案...共六道选择..

.希望给出正确答案...共六道选择..
1.--- Where is Mr.Smith?Have you seen him?
--- He ____ be in his office.
--- He ____ be in his office,for I left there just now.
A.may; can’t B.can; may not C.may; mustn’t D.can; don’t have to
2.Please don’t get the blackboard _______.I haven’t finished taking notes.
A.cleaning B.cleans C.to clean D.cleaned
3.When the new book will ____________ hasn’t been decided yet.
A.come about B.come out C.be come out D.publish
4.--- Who is the man over there?Is it Mr.Li?
--- No,it _______ be him,Mr.Li is much taller.
A..mustn’t B.may not C.needn’t D.can
5.A computer is _______ CPU,main board and some other parts.
A,.make up B.made up of C.made of D.made from
6.He pretended _________ me when I called him.So I was angry with him.
A.to not hear B.not to hear C.not hearing D.to hear