I s-------you could givea talk instead of Jack.

I s-------you could givea talk instead of Jack.
I s-------you could givea talk instead of Jack.

I s-------you could givea talk instead of Jack.
这位同学是想要填空吧,试试 “there a possibility”
那么这句话的意思是“你能不能替Jack发表一下讲话”

亲是想问什么呀？

I can't !