I have to ______ now. It’s time for class.—- OK, I’llcall back later.

is surprising to us is that Tom, for ______English was once boring, can speak English fluently as though he were a nativespeaker

udents were studyingin____________classroom when, all of ____________sudden,the lights went out

____of danger in the street at night,she had to go home, with a friend_________ her

At school, our social circle is limited and we don’t communicate with anyone _______ people around us.