this的复数

例句：

e injuries were avoidable.

这些伤病本是可以避免的。

e questions frustrated me.

这些问题使我懊丧。

e shoes buckle at the side.

这双鞋从旁边上扣。

e houses are soundly built.

这些房子盖得结实。

e peaches are still firm.

这些桃子还很硬。

e shoes are much too tight.

这双鞋太紧了。

do these two pieces join?

这两件东西怎样接合呢？