31.—Bad luck! I have left my dictionary at the dormitory. —__________.
---What have you learned from your experience in the USA? ---Well, meeting people from another culture ______ be very difficult.
. ---Have you seen ____ iphone? I left it on the desk this morning. ---Is it ____ white one? I think I saw it somewhere.
It is a ________,but is a chance as well.
How long have you ________ in the army?
—Why did Tony leave our company? —He was________ a better job at Haier.