I heard someone___the door and___

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I heard someone___the door and___

I heard someone___the door and___
I heard someone___the door and___

I heard someone___the door and___
I heard someone__open_the door and_leave__.
秃头 不定式 作宾补

I heard someone opened the door and entred.

太多选择啦!例如,knock at......then come in.注意hear后面用动词原形或现在分词,但此处由于后面有and在,表明听到了knock的全过程,故只能用原形动词(若只是听到了敲门声但不知后来怎样了,那就应该用knocking at)。