—Excuse me, Dad, but I’m going to the club to meet my friends in the football team. —OK. ______
I don’t know who invented __________ telescope, but I think it is __________ most useful invention.
Rarely _____________________ .
This is the only way we can imagine _______ the overuse of water in the students’ bathrooms.
Studies show that people are more _______ to suffer from back problems if they always sit before computer screens for a long time.
--- How do you ofen spend your time? ---- Personally speaking, there is nothing happier than reading a book, _______ a cup of coffee.