—Mum,where is David?
—He ______ to see the science fiction film Back to the future.
A.is goingB.goesC.has goneD.was going
-Must I leave the reading room before 6o'clock?
-No, you _______. You can stay here until 6:30.( )
can't
needn't
mustn't
shouldn't
The woman _______ is the most important in my life is my mother.( )
which
what
whom
who
-Would you like a cup of coffee or tea?
-_______. I'd like some milk.( )
Either
Neither
Both
None
Our world will get better and better if each of us _______ a greener life.( )
is living
lives
lived
live
-____________do you go to the cinema?
-Once a month.( )
How long
How far
How often
How much