题目内容：

We will have a school trip next week.AHave a good timeBWe willCI'm happy to hear itDDon't forget it

优质解答

We will have a school trip next week.
已经是完整的句子了,可否说一下空在哪?

追问：

回答的选择

追答：

D Don't forget it A B无法构成完整句子，C 语境不服~~