1编号：3055题型：单选题测试正确率：73.14%
It is important for anyone to______a foreign language.
2编号：3049题型：单选题测试正确率：34.52%
They______in training the dog to guide the way.
3编号：3048题型：单选题测试正确率：74.54%
I am really not good at maths. I need you to______me ______my homework.
4编号：3041题型：单选题测试正确率：55.12%
Everyone has his dream. And it may take us years to______the dream.
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