everything___can be done today mustn't be done tomorrow.
the man___I saw told me to come back today.
he talked a lot about the teachers and the schools___he had visited.
the ninth lesson___we are learning is the most difficult in Book One,
the house in___Lu Xun once lived is a museum now.
I can never forget the day___we worked together and the and___we spent together .
can you tell me the reason___you came late for school this morning?
everyone admires hie family___parents treat their children as friends.