Neither Tom nor his parents ________ at home.

What the science teacher does and says ____ of great importance to college students. 

Across the Yangtze River ______ more than one bridge, the Nanjing Changjiang Bridge being the first one.

The factory used 65 percent of the raw materials, the rest of which _______ saved for other purpose.

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