Everyone should _______________ the environment.
A．make a contribution to protect B．make contribution to protecting
C．contribute in protecting D．make contributions to protecting
—Listen, Lily is playing the piano!
—Wow, how sweet the music ______!
A．is heard B．hears C．is sounding D．sounds
________ tomorrow, I would take a bus to school.
A．If it rains B．If it was to rain
C．Should it rain D．Rained it
Can you move the desk a little further, for it most of the office？
A．takes up B．takes off C．takes in D．take on
Policies are also an important factor for the car market ______ the purchasing power of people.
A．in addition B．beside C．expect for D．apart from
It has been announced that students remain in their seats until all the papers have been collected.
A．can B．will C．shall D．may
