-- ________ (be) you at home last night?--- Yes,I was.

问题描述:

-- ________ (be) you at home last night?--- Yes,I was.
2 Let him ________ (have) a drink of orange,please.
3.When everybody _________ (seat),the meeting began.

Are (you 要搭配are
have (let sb do
have been seated,可以理解为到座谢谢,我都懂了