1编号：3328题型：单选题测试正确率：55.26%
— Is this black school bag ______ sister's ? — No, it isn't. ______ is red.
2编号：3186题型：单选题测试正确率：75.76%
—Is this ______ book? —No, it’s not ______.
3编号：3185题型：单选题测试正确率：63.83%
Echo is ______ teacher. She teaches ______ English.
4编号：3184题型：单选题测试正确率：60.87%
______ is ______ best friend.
5编号：3127题型：单选题测试正确率：64.45%
My ruler is short, but ______ is long.
6编号：2690题型：单选题测试正确率：0%
Is there any difference between your idea and ______?
7编号：2655题型：单选题测试正确率：0%
We are sure that our football players will do________ best.
8编号：2654题型：单选题测试正确率：0%
---Excuse me , are these _____ new shoes ? ---No, they aren’t. _____ are black over there .
9编号：2653题型：单选题测试正确率：0%
An old friend of my sister's always helps my brother and_____ with ______English.
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