he want into his room _________ the light and began to worka has turned on b turned offc turned onhe want into his room _________ the light and began to worka has turned on b turned offc turned on d has turned off
问题描述：
he want into his room _________ the light and began to worka has turned on b turned offc turned on
he want into his room _________ the light and began to work
a has turned on b turned off
c turned on d has turned off
答