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When a cup of tea (is put/ is putting) on a tea table before

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When a cup of tea (is put/ is putting) on a tea table before you or sent to your hand 选择哪个,
选择哪个,为什么
When a cup of tea (is put/ is putting) on a tea table before you or sent to your hand
When a cup of tea (is put/ is putting) on a tea table before
is put
被放在茶桌上,当然选被动式,而不是主动的进行时形式is putting了.后面的sent也是被动式,承前省略了is.