The teacher suggested we ________ as many books as we can.
That's all I want to say about this matter. Does anyone have anything else to________?
Judging from her________,she must be from Shandong Province,but I don't know which city.
(2012年浙江卷,2)The development of industry has been ________ gradual process throughout ________human existence,from stone tools to modern technology.
It is useful to be able to predict the extent _______which a price change will affect supply and demand.
In the dark street,there wasn't single person _______she could turn for help.