单选题 Many students agreed to come, but some {{U}}students against because they said they don't{{/U}} have time.
【正确答案】 C
【答案解析】[解析] 时态应用。 根据时态一致的原则，即当主句say是过去时态时，从句要用过去时态，排除B和D。against是介词，后面必须跟宾语，因此排除A。