题目内容
13．-You should do some housework ______ you have grown up．-OK，dad，I will．（ ）
| A． | unless | B． | until | C． | since | D． | although |
分析 --你应该做一些家务，因为你已经长大了．
--好的，爸爸，我会的．
解答 答案：C．考查连词．句意"你应该做一些家务，因为你已经长大了．好的，爸爸，我会的．"．A除非．B直到．C自从、因为．D虽然．这里用since引导原因状语从句，意思是"因为"．答案是C．
点评 连词可以表并列、承接、转折、因果、选择、假设、比较、让步等关系，要结合语境，选择合适连词用法．
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