Blue whales are . We should try to protect them.( )
A.in timeB.in publicC.in danger
Don't make noise in the hospital, _______?( )
do you
will you
won't you
don't you
It's important for us _______ to our teachers when we have problems.( )
to talk
talking
talks
talk
-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