选择题? Could you ---take care of my dog while I'm away?

perhaps,maybe位于句首,排除。probably"很有可能",请求别人不可能这么说吧。楼上说的很对。这种题目就是看分析判断加上语感的啦。再看看例句,possibly的例句：1。I don't know how I can possibly thank you enough。我不知道该怎样来感谢你才好。2。My heart can't possibly break。我的心不能再次破碎了。3。Tom possibly can lent your money。汤姆可能会借给你钱。probably的例句：1。It's probably not as bad as she says she does tend to pile it on。大概不像她说的那麽糟－－她确实有意夸大事实。2。Sue:Oh?Did you say probably?苏：你是说“可能”?3。Berry:I probably was about 21。贝瑞：差不多21岁。perhaps的例句1。Yes,perhaps I'm wrong there。是的,在这点上也许我错了。2。Perhaps you''ll question why……也许你会问为什么……3。"Will he come?" "Perhaps not。""他会来吗?""大概不会。"maybe的例句1。I hope so。Maybe I need a rest。希望如此。我只是需要好好休息一下。2。Maybe he does this on purpose?也许他是故意这么做的?3。Maybe you should come with us。也许你应该跟我们一起去。平时注意多加积累,英语就是靠积累的,看的读得多了,自然就知道啦。