Look at the man standing at the school gate. Is he your math teacher Mr. Brown?
No. it ____ be him. He has gone to Chengdu on business.( )
needn't
can't
may not
mustn't
In difficult times, there are always national heroes_____step up and bring people hope.( )
whom
which
who
Even if we learn something well, we will forget it_____we use it.( )
while
until
unless
With the improvement in transportation, students in some small villages no longer go on ropeways_______rivers to schools.( )
to cross
crossing
crossed
"Tara, what's your favorite_____?""Orange. Half of my dresses are orange."( )
fruit
drink
color
______January 25, President Xi told the public that nothing matters more than people's safety and health.( )
From
On
In