问题描述:
高中英语语法——非谓语问题
He spent every time he could _____spoken English.
为什么不是to practice 而是practicing
还有,pratice后不是doing?为什么是done?
He spent every time he could _____spoken English.
为什么不是to practice 而是practicing
还有,pratice后不是doing?为什么是done?
问题解答:
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