It took me two weeks ____ reading the novels written by Guo Jingming. . 

— ________ times a week do you go to the library? — Twice a week.

We didn’t go home         the old man was sent to the hospital.

 ---- Don’t play with the knife, _______ you’ll cut yourself.----Sorry, I_________ .

____ it was late, the students were still studying in the classroom.