_____, he can recover soon. I don't mind how much money I have to pay.
A. So long as B. So far as C. In case D. when 
昨日习题答案：
No matter how（ A. dry a desert may be ）, it is not necessarily worthless.
句意：无论一片沙漠多么干燥，它都不一定毫无价值。
no matter how + 形容词（副词）+ 正常语态的句子，表示“不管怎样”
no matter 后面还可以加其他疑问语如 no matter when (where; what; who; whether )意为“不管何时（哪里、什么、谁、是否）