分类：教育/科学-学习帮助
问题：Wewer____toleavewhentheJohnsonsc? 
We wer ____to leave when the Johnsons came and knocd at the door.A  about    B after C  away     D up 答案是A why is A ?
回答：be about to do sth   立即要去做某事    常与when 引导的时间状语从句搭配