We are wondering we can prevent people from polluting the earth.A．whoB．thatC．whetherD．what——青夏教育精英家教网——

We are wondering ________ we can prevent people from polluting the earth.

_______ provides many hours of air for astronauts in space.

A．An air tank

B．A power pack

D．A space sleeping bag

After half a day’s hard work, we made our classroom look as _______ as new.

Computers have made a great difference _______ our everyday life.

Mr Chen __________ his mobile phone to the shop because it can’t work at all.

A．need to return

B．needs return

C．need returning

D．needs to return

—__________ do I have to change the robot’s batteries? —Every two months.

The Nanjing Yangtze River Bridge is still very strong, ___________ it is almost 43 years old.

On the night of February 14th, 2011, all the Chinese _________ by Guo Mingyi, a very common worker who ________ more than 180 poor children since 1994.

A．are moved, helps	B．moved, helped
C．were moved, has helped	D．moved, have been helped

________ made kung fu popular in the west. He is my hero.

A．Christopher Columbus

D．Elvis Presley

All the children like the teachers ________ can understand them.

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