The passengers _______ show their ID cards before getting on the plane.( )
A.mightB.mustC.could
﹣Have you made a plan for this summer vacation?
﹣Well, not yet. I___ go to Thailand with my family.( )
may
can
must
need
He is afraid of high places,so he ______ travels by air.( )
seldom
sometimes
always
often
﹣I am terribly sorry,______I can't go shopping with you this afternoon.
﹣It's OK. We can go next time.( )
So
but
and
or
We usually have a seven______holiday every National Day.( )
days
day
day's
days'
Trust______. You can do much better than you think.( )
you
your
yourself
yours