This is______difficult problem that few students can work it out.
—________have you been in the sports club? —For two years.
She________her hometown since she was 18 years old.She told me she would return soon.
—When did you buy the book? —Two years ago.That is to say,I________it for two years.
Hurry up!The movie________for ten minutes.
I’ve lived in Maoming________1999. A.for B.by C.since