may be,I am not sure还是maybe,I am not sure?

may be,I am not sure还是maybe,I am not sure? He( )know the answer,but I am not sure.may be?must? No!The guy I need to wait still not appearing.May be I am not sure.急 I am not sure where mary is now .she (　　　　）at　home　now．may be ,maybe.填空 有一个英语选择题7:Where is Linda?I am not sure .She ______at home.A.may be B.maybeC.may D.must be I am not sure who will be the man. --Where is finish the work today,Mom? --She____bebroom ,but I am not sure.A must be Bcan't be C maybe D may be I am not sure but ___ you are right.a.I am not sure but ___ you are right.a.maybe b.may be c.could d.should 问空格处填什么 -Who is singging in the classroom?-It ( ) Jim,but I am not sure.A.should be B.may be急,说明理由 I am not sure是什么意思 Er...i am not sure. He will come .I‘m not sure.A.may B.maybe C.may be D.possible i am not sure if i am going to tom is birthday party.i may go to the concert (instead)? 翻译Can it be true ,Tom?It may be ,but I'm not sure. I am sorry .I am late today____be late next timeA be sure to not B be sure that you notC be sure not to D be sure that you did not解释一下 I'm not sure.等于may be 还是I don't know I'm not sure.It__uncle Li's.A.may B.maybe C.may be D.must be I'm sure I am not wrong