— 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
My teacher tall long hair. She is very beautiful.
The young woman always ______ sunglasses in the sun.
– What does your brother ______? – He is of medium build.
There ______ a dolphin show in the zoo tomorrow evening.
There is _____pollution and ____fishes in the river now than 20 years ago.