---Della, would you like some potato chips? ---No potato chips for me---I’m ______ a diet.
—Hi, Li Xiaoxia. What a surprise! Dad _____ you _______ so early. He’s upstairs reading. I’ll just call him.
—Where is Lu Wenjie? —I have no idea.He__________ be in the library.
. — You must obey every word of mine! — _____ I don’t?
16. The river,______the bank are covered with trees, is very long.
While building a tunnel through the mountain, ________ .