udents were all standing by the swimming pool,______ swimming suits.

nment-friendly Olympics requires Beijing toimprove its environment, turning itinto an ecology-friendly city

ul playing basketball for his school—Well,he,But he has given it up and switched to playing volleyball.

Scientists conclude that female cats tend to favor their right paws when _______ complex tasks.

dge and learning are important if we want to besuccessful, but they may also ______ our thinking.