In our class, about of the students are girls.A.three fifth B.third fifths C.three fifths
—____, Tom. Is this your pen? —No, it isn’t. I think it’s ____.
The girl ____ red is my sister.
—How old is Tom?—He is ____.
—Do you have a small mouth?—No, I don’t. I have a wide ____.
—____ your sister know Lucy?—No, she ____.