As the immune system weakens, it loses the ability ________ illnesses.A．fightin_刷题宝

题干

As the immune system weakens, it loses the ability ________ illnesses.

A．fighting	B．fought
C．to fight	D．to be fought

上一题下一题 0.64难度单项选择更新时间:2014-06-07 08:51:42

答案(点此获取答案解析）

小学学科试题库

初中学科试题库

高中学科试题库