— __________ have you been to Hong Kong on business?— Once in a month.
I prefer watching TV to ____ music every day.
---Whose jacket is it? Is it yours?---No, mine is here.Maybe it ___________Jenny.
The first thing_______ I am going to do this evening is to write to my father.
She got married ___________ a policeman twenty years ago.
____________ you study , _______________ grades you’ll get.