--Would you please give me a hand and take the bookcase upstairs?-- _____.
__________the mooncakes are!
—How do you learn English, Tony? —I often practice English _____ chatting ______ my American friends.
She is a ___________ girl. And she does everything ___________.
We walked for ___________ hours before we got to the top of the mountain.
Only ___________ the students exercise for more than half an hour every day.