i stopped to listen,and my son seemed ___himself ___in the living room

题目

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

答案

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