people didn't know much about the sun or the
people didn't know much about the sun or the
Long ago,people didn't know the earth__round the sun.A.moves
didn't he know the sun (rise) in the east?
选择Didn't you know the sun _____in the east?
Didn’t you know the sun ________in the east?
he didn’t know much about the harmful effects on smoking,为什么
i didn't know anything about the computer program,or a huge
Young people don’t know much about the world before they ___
people didn't know what_____(happen)during the night
scientists didn't know much about lung cancer——.
Scientists didn’t know much about lung cancer _____.
i don't know much about the man.can you tell me()(much)about