单项选择题
We have to collect enough evidence()that we have suffered a lot of damages.A. showingB. to showC. showed
单项选择题 早产是指下列哪项
单项选择题 孕卵开始着床是在受精后下列所指哪项时间
单项选择题 He speaks German, but his native()is French.A. tongueB. voiceC. accent
