4.What ____ he _____ that he _____ (do)?
did,say,had done或would do
由主句过去式,可知最后一空要过去化,即用过完或过去将来时.
5.When_____ he _____ you that he _____ (buy) this car?
did,tell,(had) bought或would buy
与上题解释相同,答案不唯一
9.Why _____ you _____ that you _____ (be) busy?
did,say,had been或were
与上题解释相同,答案不唯一