this复数形式

　　例句：

　　1.These injuries were avoidable.

　　这些伤病本是可以避免的。

　　2.These questions frustrated me.

　　这些问题使我懊丧。

　　3.These shoes buckle at the side.

　　这双鞋从旁边上扣。

　　4.These houses are soundly built.

　　这些房子盖得结实。

　　5.These peaches are still firm.

　　这些桃子还很硬。