__Had______ you___locked_____(lock)the door before you left the house?
—___Have___you____had__(have)breakfast yet?
—Yes,I__had_____it at 8：00.
By the time Tom___left_____(leave)school,he__had learnt_____(learn)English and French.(或者leaves,would have learnt）
She__didn't pass_____(not pass)the exam yesterday because she__hadn't prepared_______(not prepare)her lessons well.