1编号：4144题型：单选题测试正确率：49.43%
Our factory ______ cotton.
2编号：4138题型：单选题测试正确率：46.02%
You can leave ______ if you have finished.
3编号：4137题型：单选题测试正确率：52.75%
He got up early ______ he could get there on time.
4编号：4126题型：单选题测试正确率：37.5%
Everything is under ______.
5编号：4125题型：单选题测试正确率：69.26%
We’d better travel by bike in order to ______.
6编号：4124题型：单选题测试正确率：35.8%
______ we do something to protect the environment.
7编号：4123题型：单选题测试正确率：38.51%
Protecting the environment is a ______ activity.
8编号：4122题型：单选题测试正确率：79.61%
Don’t forget to ______ the lights when you leave.
9编号：4121题型：单选题测试正确率：55.68%
We can travel by bike______ by car.
10编号：4120题型：单选题测试正确率：50.49%
It’s more ______ to take the underground in Beijing.
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