You must keep the bedroom ______(clean)

问题描述:

You must keep the bedroom ______(clean)

We must keep the bedroom(clean).
意思是:我们应该保持卧室清洁.为什么要用clean的原型?不是keep dooing吗?因为keep the bedroom是一个词组呀!如果keep doing中若doing是个动词,就应该加ing。 望采纳!