1编号：61503题型：单选题测试正确率：0%
It is difficult for a robot the same things a person does.
2编号：50846题型：单选题测试正确率：66.9%
is dangerous for us to swim in the river alone.
3编号：49195题型：单选题测试正确率：72.27%
usually takes Mum about half an hour to cook supper.
4编号：49194题型：单选题测试正确率：53.9%
is really hard them to climb such a high mountain.
5编号：48129题型：单选题测试正确率：71.3%
It’s difficult English well.
6编号：46691题型：单选题测试正确率：58.33%
It usually takes me about five minutes the school library.
7编号：44211题型：单选题测试正确率：61.52%
is dangerous to swim in the river alone.
8编号：28965题型：单选题测试正确率：61.74%
It Li Dan ten minutes home.
9编号：4808题型：单选题测试正确率：29.61%
I find difficult to learn math.
10编号：3990题型：单选题测试正确率：66.08%
It’s really important ______ English.
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