1编号：24811题型：单选题测试正确率：42.55%
There are people in the supermarket. It's so crowded.
2编号：24810题型：单选题测试正确率：44.34%
He has basketballs.
3编号：3917题型：单选题测试正确率：54.48%
There are ______ of people in the park. They are waiting for the superstar.
4编号：3351题型：单选题测试正确率：47.22%
Tom is ______. Today is his ______ birthday.
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