1编号：25378题型：填空题测试正确率：43.83%
—Could I buy some drinks and snacks?—Sorry, you ____ (can't / couldn't).
2编号：25377题型：填空题测试正确率：57.95%
—Could your brother run at the age of two?—Yes, he ____ (can / could).
3编号：25376题型：填空题测试正确率：58.43%
—Could I have a look at your new watch?—Yes, you ____ (can / could).
4编号：25375题型：填空题测试正确率：61.9%
Could you ____ (buy / bought) a car ten years ago?
5编号：25374题型：填空题测试正确率：59.24%
He ____ (can / could) read and write when he was three.
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