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单项选择 适中0.65 引用1 组卷117
The pressure ______ causes Americans to be energetic, but it does put them under a constant emotional strain.
A.to competeB.competing
C.to be competedD.having competed
15-16高二上·广东汕头·期末
知识点:不定式作定语不定式的一般式:to+动词原形 答案解析 【答案】很抱歉,登录后才可免费查看答案和解析!