There are eight tips in Dr.Roger's lecture on sleep，and one of them is：________ to bed early unless you think it is necessary.
A．doesn't go B．not to go
C．not going D．don't go
Not until I read your letter ________ the true state of the affairs.
A．did I understand B．had I understood
C．I understood D．I had understood
________ going to the program If You Are the One，she knew she had to be there or her mother would be unhappy.
A．Although much she disliked
B．Much although she disliked
C．As she disliked much
D．Much as she disliked
—Mary，turn the heat down，________ burn.
—OK.Mum.
A．the cake will B．or the cake will
C．will the cake D．and the cake will
Seldom ________ TV when he studied in senior high school.
A．he watches B．he watched
C．does he watch D．did he watch
Everything，unless otherwise ________，will go on as planned.
A．stating B．states C．to state D．stated
