—Have you _____ had dumplings?—No, not _____.
We will have a ______ holiday next week. What about going to Hainan?
You _ to the meeting this afternoon if you have something important to do.
This fashion show in our school was so ________ that we heard ________ shouts everywhere.
–What did the old driver say ______ the bus? –He said his bus ______ an old friend and he missed it.
To make our city greener and cleaner, we need ______ trees.