题目内容
As the number of people on earth increases, it becomes more difficult for the population to ______ on the resources of the land.（survivor）
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Viewing and ________ documents on a computer screen can be much quicker than working on paper.（editor）
There are three colors in the British flag, _________, white and blue.（name）
In this country, wood was ______, so most houses were built of dried mud, with a roof supported by tree trunks.（scarcely）
As she is __________ about putting on weight, it is unwise of you to mention it.
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