I am not sure____ he will improve _____ this year.A.that;himself B.if ;himself C.that;him D.if:him 为什么呢?哪个时候可以用that

I am sure____ he must go to the library.a:to b:of c:with d:that I am not sure____ he will improve _____ this year.A.that;himself B.if ;himself C.that;him D.if:him 为什么呢?哪个时候可以用that I hear Tom lives here,but I'm not sure____.A.which room he lives B.which room does he lives 英语困惑困惑4.I have not found my book yet;in fact ,I am not sure____ I cound have done with it Awhether BwhyCwhat Dwhen 选什么?为什么?如何翻译这个句子 5.“____”for many years ,the writer suddenly became famous Ahaving ignored 一道英语情景对话题Speaker A:Have you found your book yet?Speaker B:I am not sure____.A.where is it now B.where have I put it C.what I have done with it D.what I did about it我是在选项C 和D之间纠结,答案给的C,用完成时没错, He is swimming, and I am not 有什么错 i am not so careless as he is这句话能不能说成i am not so careless as him或者i am not so careless as he I am not as( )as him i am quiet but he is outgoing 怎么填 Mmm,I（ ）konwA.am not B.not C.have not D.He's 反义疑问句 thinkHe thinks he is right,does not he?He thinks I am right, I am afraid not. I am not little ' I am not alone.'.. i am not chinese I am not worth I am not myself i am not like I am not your