scientists didn't know much about lung cancer——.
scientists didn't know much about lung cancer——.
Scientists didn’t know much about lung cancer _____.
people didn't know much about the sun or the
we didn't know much about each other twenty years ago.we wer
英语作业帮帮我!翻译下列句子!1.Although I didn't know much about training
he didn’t know much about the harmful effects on smoking,为什么
lung cancer是什么意思
选择He didn't know ( )about it
They don't know scientists,any more than they know much abou
翻译 As is know to all,lung cancer is at least in part caused
smoking can reason lung cancer
She didn't know about this bad news a bit.She didn't know ab