This is 3-D printer. And this is an artificial (人工的) ear. Can you believe that scientists printed this artificial ear by this 3-D printer?
Your father’s father is your _____. A. grandfather B. uncle C. cousin D aunt
There is _______ “i” in the word i phone .
They _______Sally and Bob. Sally _______my cousin.
—Hello! Are you Mr Wang? — _______
—______ is she? —She’s fine.