Please be quiet.Our teacher is coming.
It ______ be our teacher.She has gone to Beijing.( )
must
may
can't
mustn't
Robots ______ more heavy work for us in the future.( )
did
will do
have done
were doing
Who is ______,Tony,David or Andy?( )
short
shorter
the shortest
shortest
﹣﹣Would you like something to drink?
﹣﹣Yes,please.I'd like some ______.( )
beef
juice
fish
bread
Look!There ______ many boys on the playground.( )
was
were
is
are
______ he is ill,he still works hard.( )
Although
Since
Because
So