---Are you classmates, Millie and Lily? ----Yes, ______.
The old scientist has made a great contribution the moon.
—What is the table made _______? —Wood.
Many countries have a lot of rockets into space.
—How can I learn English well? —You will learn it well ________ you practice speaking it often.
—Are you ready to leave, Helen? —_________ —I was just asking if you’re ready to leave.