下列各句中，加下划线的熟语使用不恰当的一句是（ ）

offered us a lift when he was leaving the office, but our work ______, we didn’t accept the offer.

You can see my grandparents in the ________.

.在字母表中,______和______ 两个字母可以单独成词。

The good thing about children is that they very easily to new environments.