( )on duty today?Wng Tao( ).Is( ) here today?No.Who ( )here

(Who) is on duty today?
Wang Tao (is).
Is (everyone) here today?
No.Who (isn't) here today?
问题补充：
Wangy Hai (and) Wang Dong.
(Are) they twins?
(Yes),they look the same.
(Where are) they?
I think they are (at) home.
(Thanks) for telling me.
You're welcome.