—Have you heard that earthquake struck Japan on March 11?—Yes. It came as shock to us.
The British are not so familiar with different cultures and other ways of doing things, ________ is often the case in other countries.
________ some students are not aware of is ________ difficult life can be if they are not devoted to study.
________ you are supposed to do ________ you don't like a thing is change it. Don't complain.
His younger sister may already be in high school now, in ________ case this picture book is too childish for her.
It is by no means clear ________ the president can do something to end the strike.