Sorry for my wired voice,since I've caught a cold seriously.解释：Sorry for sth为什么而道歉现在你是为你不能正常发音的嗓音而道歉，所以我认为应该把“不能正常发音”前置另外since有"由于"的意思，表达更地道这样讲老师会更加原谅你的
I hush the heavy cold, cannot normally pronounce, please forgives
Beg your pardon,please!I can't make a clear pronunciation because of a serious cold!
我得了重感冒,不能正常发音,请原谅"I got a heavy cold, so cannot speak with normal voice, sorry.
答：She has caught a bad cold.或She has had a bad cold. 根据这句话"得了重感冒" 时态应该用现在完成时详情>>
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答：moleculemoleculesnumerator前两个是化学定义中的分子，表示的是物质的组成部分；而第三个才是数学定义中的分子。分母的那个是对的。详情>>
