Are these words very difficult -------- (remember)?

学习时间:2026-06-05 07:43:10 阅读：9249

Are these words very difficult ________ (remember)?Do the children __________(swim) in the river?

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2026-06-05 07:43:10

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to rememberswimming 再问：为什么是swimming 呢？前面不是Do 么？再答：对不起，没看清，呵呵应该是原形一般疑问句，前有疑问助词，用swim ~~~~~~~~~~～～~~~~祝你进步，如对你有帮助，请及时采纳~~~~~~~~~~~~~~~~