单选题 If you had gone over your test paper carefully before handing it in, you would have made fewer mistakes.

【正确答案】 C

【答案解析】句意：如果你交卷之前仔细检查一下，所犯的错误会更少。go over仔细检查；复习。go through仔细检查。二者意思相近，可相互替换。：look up向上看；查找。think about考虑。go round到处走动。因此，本题的正确答案为C。