Don't forget ____(lock) the door when you leave.速度回答有分有助于回答者给出准确的答案

Don't forget ____(lock) the door when you leave.速度回答有分有助于回答者给出准确的答案
Don't forget ____(lock) the door when you leave.速度回答有分
有助于回答者给出准确的答案

Don't forget ____(lock) the door when you leave.速度回答有分有助于回答者给出准确的答案
to lock
forget to do sth.是固定句型
于forget doing的区别在于to do 是还没做,“忘记”做某事了
而doing是做了,“忘记了”做了某事
don't forget to do sth.是不要忘记做某事