We all know that drinking too much _____ our health, but some people don’t care.
A．is harm toB．does harmful toC．is harmful toD．do harm to
C
考察harm的用法。Do harm to ="be" harmful to 對(duì)……有害，該句主語(yǔ)是drinking too much,單數(shù)，所以選擇C
句意為，我們都知道飲酒過(guò)多對(duì)我們的健康有害，但是很多人不在乎。
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