-Is the man over there your English teacher ? --No, it ______ be him. He has gone to Canada to study further.
—Mike,you________play the piano well if you don't work hard.—I know,Mom.
You will________take a holiday after the exams.
.Could you please pass me two ________?
Everyone should play a part_____the earth.
Please check your paper to ________ there are no mistakes.