Please excuse me _______ your letter by mistake.
Knowing office rules — whether _______ or not—is critical, particular for young job seekers.
_______Dalian with Tianjin, and you will find that Dalian is a better place to live in.
---What _______do you have with that businessman? --- He is my regular customer.
I don’ need any money this time, but I’ll bring some_______.
---You see, my mum has promised to buy me ________MP4 next month. ---Oh, really? But I wish I could listen to music________MP3.