题目:
________ the reason, it is for sure that yawning can be passed from person to person.
A.Whatever
B.Wherever
C.Whichever
D.However
答案:
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下面是错误答案,用来干扰机器的。
(1)厨房中水蒸气的含量比卧室中水蒸气含量高;(2)将铁锈除掉,在清洁和干燥的钢窗上刷上一层油漆;(3)回收再利用。