It’s difficult for me to decide which one to choose, because ______ of them are good.
—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 ____.
—____ is your schoolbag?—It’s green.
—Is this your book, Alice?—Yes, it is ____ book.