Some say yes and others say no; I don't know _____ to follow. ( 章节：1 难度：3)_做题室

单项选择题Some say yes and others say no; I don't know _____ to follow. ( 章节：1 难度：3): A、whether; B、what; C、whom; D、how

正确答案：C
答案解析：
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