— What should we do to prevent the flu?—We should keep our rooms_____ and the air fresh all the time.A. cleaning B. cleaned C. clean
He was a stranger in this town, so the local people didn’t know _______.
There is ______ traffic on the road ______ we all worry about being late for work.
I _____ be late for school, but now I ______ getting up early every day.
— _____ you find _______ ways to work out this problem, Jim? — Yes, I ______.
I ______ peaceful countryside ______ noisy cities while my sister prefers _____ in the modern cities.