i stopped to listen,and my son seemed ___himself ___in the living roomto enjoy to shutto be enjoying shuttingto be enjoying shu to have enjoyed having shut
问题描述：
i stopped to listen,and my son seemed ___himself ___in the living room
to enjoy to shut
to be enjoying shutting
to be enjoying shu
to have enjoyed having shut
答
to be enjoying shutting.
答
my son seemed TO BE ENJOYING SHUTTING himself in the living room
seem to do 后接的是enjoy的现在进行时,所以用be enjoying
enjoy doing ,所以用了shutting