—Both of the skirts are in style this year. —Yes, but I think the green one is .
—Must we keep the room_______ all the time? —No, you don’t have to.
—He plays basketball so well! Who taught _______? —He learnt it by _______.
—_______ can I keep the books? —Two weeks.
My mother often tells me _______ my classmates when they need.
Do you prefer _______?