hyphen

在 'high-tech' 中应该有一个连字符。

There should be a ___hyphen in "high-tech."

单词'short-sighted'需要一个连字符。

The word 'short-sighted' requires a ___hyphen.

别忘了在 'mother-in-law' 中使用连字符。

Don't forget to use a ___hyphen in 'mother-in-law'.