1编号：4114题型：单选题测试正确率：57.14%
Planting trees on Tree Planting Day is really ______.
2编号：4107题型：单选题测试正确率：68.51%
There is no ______ person in the world.
3编号：4106题型：单选题测试正确率：65.58%
Helping others is a/an ______ thing.
4编号：3516题型：单选题测试正确率：39.58%
Hurry up! There is ______ time left.
5编号：3260题型：单选题测试正确率：77.57%
I think this question______to answer.
6编号：3054题型：单选题测试正确率：45.42%
Justin Bieber is______as a young singer.
7编号：3050题型：单选题测试正确率：63.54%
There is no need to be______. You will have another chance if you keep trying.
8编号：3047题型：单选题测试正确率：42.39%
Lily is a friendly girl. She is always______to help others.
9编号：3046题型：单选题测试正确率：30.31%
Kung Fu Panda is a film about a______panda.
10编号：3038题型：单选题测试正确率：38.08%
If you try your best, you will find that you have______power.
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