Is Jessica giving us a speech this evening?No,it__be her.She

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Is Jessica giving us a speech this evening?No,it__be her.She__to Japan.
A.mustn't;has gone B.mustn't;has been C.can't;has gone D.can't;has been

A
不可能是 mustn't be 做出判断
has gone to 去那儿
杰西卡今晚要给咱们做演讲吗?
不,不可能是她,她去日本了
再问：为什么不能选C
再答：这里是做出推断，判断用mustn't be 一定不是，而不用can't be 一种习惯用法， ~~~~~~~~~~～～~~~~祝你进步，如对你有帮助，请及时采纳~~~~~~~~~~~~~~~~

-Is that girl Susan?-It__be her.She left fo she is b her sister this evening. Is Jessica a diligent student?No,but she is a lazy one the teacher and poet ( )giving a speech to us 1.Is this Lucy's eraser?No,it's not_____.A.she B.hers C.her look!it__be new headmaster.-it__be him.he went to US A.can;m 谁来翻译一下：she is giving her class a lesson. She is visiting her grandparents this evening.(改为一般疑问句） jenny is friendly to her friends 同义句 jessica is from the us her parents ____(go)to a party this evening ,so she has to s Is this ____ ruler? No,____is over there. A.her she makes a difference by giving her time .的翻译