The boys enjoy playing basketball __________ many of the girls relax by playing ping-pong

Can you ______ your sister from that group of girls

105The waters of this great lake, which is also the world’s deepest, have been ____ by waste from a chemical factory

The incomes of skilled workers went up ______, unskilled workers saw their earnings fall

uncertain side effect the medicine will bring about, although about two thousand patients have taken it