Have you returned the book to the library _______ –Yes, I have ____ returned it.

The survey shows that urban students spendabout twice ___ money the ones from rural areas do.

eople say that Mars should be protected as a wildlife reserve where we do everything possible to avoid pollution, on the _______ that life could exist on it.

I am bad ______names

Tomorrow David will have an important meeting, so he will _____a suit at the meeting.