At this time yesterday my neighbors meals with their friends.

He________ six symphonies by the time he was 20.[ ]

In my opinion, all Mr. White ___ good to his students in his class at present. He is very strict in their study.

I failed to catch the early bus because I overslept this morning． —You_________have stayed up too late last night．

Sorry I’m late. I ____ have turned off the alarmclock and gone back to sleep again.