1编号：56861题型：单选题测试正确率：56.08%
A smile costs , but gives so much. So we should learn to smile.
2编号：56860题型：单选题测试正确率：52.28%
At present(目前), children mean to most parents in China.
3编号：23754题型：单选题测试正确率：59.5%
His parents math teachers in that school.
4编号：23641题型：单选题测试正确率：25.6%
—When shall we meet again? — next Friday.
5编号：13373题型：单选题测试正确率：41.82%
This is a very old song, so only young people know it.
6编号：13372题型：单选题测试正确率：72.73%
There are only students in the classroom. Where are the others?
7编号：13371题型：单选题测试正确率：57.14%
There is milk in the fridge, so we'll go to the supermarket and buy some.
8编号：13370题型：单选题测试正确率：23.38%
How can you make a trip with so money?
9编号：13369题型：单选题测试正确率：42.28%
There is ink in my pen. Would you give me ?
10编号：13368题型：单选题测试正确率：24.39%
It’s nothing serious. You’ve just caught a cold.
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