You can find ________ become more difficult to see clean rivers in our city.
—Would you like ______ with me this afternoon?—Yes , ______.
Cindy is ____at Chinese and she speaks Chinese ______.
—Do you like playing computer games?—No, I don’t. But Nick ______.
You can’t put it here. You must ______the right place.
—______, can I smoke here?—No, you can’t, Look at the sign.