---The man in a black suit _______ be our youth worker.---It _______ be him. I saw him in the classroom building some minutes ago.
—Have you _____ had dumplings? —No, not _____.
The shoes were worn out, what’s more, they aren’t worth _____.
—Hello! May I speak to Alice? —Sorry, she _____ Shanghai.
---Have you heard of Nanjing? --- Of course. It is famous_______ its beauty of nature______ the host city of the 2014YOG.
He caught the first bus starts at five o’clock every morning..