Roast duck is one of _______ dishes in Beijing.

—You see, “Food Safety” receives thousands of Internet hits a day.
—Obviously, it has become one of the _________ topics recently.

Linda’s aunt and uncle _______ workers.

Mr. Chen is handsome and kind and he is one of _________ in our school.

She can play_______ piano, and she plays it ________.

The pear tree is           . We can pick pears easily.

If there are ____trees, the air in our city will be ____cleaner.

I was very       to see our teacher at the party because  he was ill.

---You’re late! You were ____to be here an hour ago.
--- Sorry, Mr. Hu.

Mike couldn’t find Kelly ____before the bus left, so he didn’t get on the bus.