- What’s the low-carbon (低碳) style life like?- Save _____ energy, produce _____ carbon.
—Peter can play _______ volleyball. What about you? —I can play _______ drums.
—Do you like history? —No. I think it’s _______.
My mom always _______ she’s busy.
—______ Monday we have a basketball game. — Is it _______ the morning?
—Where are the books? —_______ in the bookcase. Do you need _______ now?