He worked hard. , he didn’t pass the exam. [ ] A．ButB．So C．YetD．However
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He worked hard. ________, he didn’t pass the exam.
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A．ButB．SoC．YetD．However试题答案
答案：D
解析：本题表示转折，在But和However之间选择。but是并列连词，转折的意味较强，总位于句首，无需用逗号分开，可以连接句子、短语或单词。however是副词，可位于句首、句中或句末，通常用逗号分开，它只能连接句子，而不能连接短语或单词。 |