Now lots of teenagers spend a lot of time playing computer games. — Yes. Teachers and their parents should prevent them ___________ too much.

While many believe Benjamin Franklin to have discovered electricity, recent findings seem to show _____

The police asked him to _________what he had seen.

The great use of a school education is not so much to teach you things_____ to teach you the art of learning[ ]

Since our country has so many good table tennis players, we have to ______ the best ones to take part in the game.