______I know him, ______I hardly talk to him.
—Let’s _________ soccer. —Great! But I don’t have a soccer ball.
—Do you like math?—Yes, it’s difficult ________ really interesting.
—I think this ________ is too short. —What about the _______ one?
—Where is my schoolbag, mom? —It’s _______ your room.
—What’s your favorite ________? —It’s science.