1编号：3681题型：单选题测试正确率：84.0%
Ben was unhappy _______ he got a C in the math test.
2编号：3668题型：单选题测试正确率：75.43%
Sam got up early _______ he was late for school.
3编号：3284题型：单选题测试正确率：76.24%
I won't buy this expensive hat ______ it suits me just fine.
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