--- We can go swimming in the lake in summer. But why don’t you like it? --- Because it’s ___________. 

 Dad, don’t worry about me. I can take care of _______.

He has worked in the city _______ three years ago while his wife has been here______only one month.

Which book is ______ to understand, this one or that one?

Teenagers are supposed to ________ their seats to the old on bus.