_____ New York _______ London are two of the largest cities in the world.

 This is Susan and that is Mary. _     my _        .

Mother, together with her children , ______ to the hospital.

 The fact that so many people still smoke in public places ________ that we may need a nationwide campaign to raise awareness of the risks of smoking.(2011·江苏)

The lake is calm and clear, and one of the things that _____in the water is the famous tower.