--- Mary looks blue all the morning. What do you think made her so ____ . --- Losing her new bicycle.
All of us went to the park ___ Hsiao Wang .He was ill at that time.
Mr. Chang is not only a teacher, ___ a writer.
In our school only teachers are allowed to use this room. And only in this room __ find some good dictionaries.
My friend, Tom, bought __ oar.
Please come here ___ four days.