摘要： They are working hard.

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They are working hard now and I believe they will make progress more this time.

A. slowly
B. quietly
C. politely
D. quickly

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________ they are working at it!

A.
What hard
B.
How a hard
C.
How hard
D.
What a hard work

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They are working on the farm．Everyone busy．

A.
harder, is
B.
hard, is
C.
harder, are
D.
hardest, are

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They are working 　　　 in the factory.　　　

[　　]

A．hardly　　　B．hard　　　C．harder　　　D．more hardly

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________ they are working at it!

[　　]

D．What a hard work

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