i am sure tom is at home because i have seen him( )upstairs.A.run B.running 为什么

i am sure tom is at home because i have seen him( )upstairs.A.run B.running 为什么 i am sure tom is at home because i have seen him( )upstairs.A.run B.running 为什么 i am sure is you. i am not sure if i am going to tom is birthday party.i may go to the concert (instead)? I am sure he is at home.保持原意不变,He ___ ___ at home. I am sure is you ,just you are you sure that tom is at home怎么回答 Tom _____ at hom ,but I'm not sure. Look at the sky.I am sure it _(rain). I am sure to have f at the party tonight. I am sure tickets are____(可得到)at the boxoffice I am not sure where mary is now .she (　　　　）at　home　now．may be ,maybe.填空 I am sure I am sure that I am sure we I am sure. I sure am是什么意思 where.is.Amy.she.may.bewhere.is.Amy.she.may.be.at.home.but.i.am.sure-------it.a.at.b.about.c.with.d.in