-----Mr. Lee ______ to a student when I entered the classroom this morning.----He is very patient (有耐心的)_____ he is young.
What _______honest boy! And he is _______ best student of all.
----- ____________________? ------ I am a doctor.
----- ____________________________? ----- It’s black, B-L-A-C-K, black.
----- Hello, are you from America? -----_________________.
___________ sister is in Beijing .