Oh,the door is not open.I forget_______it.填to close,closing,close或closed

问题描述:

Oh,the door is not open.I forget_______it.填to close,closing,close或closed

closing

closing
forget + 现在分词 忘记做过某件事 (已经做过)

closing (根据句意思“门不开,我忘记我锁门了)
forget to do sth 忘记去做过某事
forget doing sth 忘记做过某事

closing(门没有开,我忘记我关了)forget to do sth,忘记没有做什么(应该做的,忘记了,而没有做)
forget doing sth忘记做过什么(实际上那件事已经做了,忘记了,已经做过了)