both jack's request and Mike's own能不能换成 at both jack and Mike's request为什么呢?

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both jack's request and Mike's own能不能换成 at both jack and Mike's request为什么呢?
both jack's request and Mike's own能不能换成 at both jack and Mike's request
为什么呢?

both jack's request and Mike's own能不能换成 at both jack and Mike's request为什么呢?
不能,可以换成at both Jack's and Mike's requests