The fact has worried many scientists______ the earth is becoming warmer and warm

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The fact has worried many scientists______ the earth is becoming warmer and warmer these years.[     ]
A. what
B. which
C. that
D. though

答案

举一反三

News came from the school office ________ Wang Lin had been admitted to Beijing University.[     ]
A. which
B. what
C. that
D. where

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With your help, there is no doubt ________ our plan is meant for will work out successfully.[ ]
A. that what
B. whether that
C. what that
D. that whether

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Optimism had been growing ________ the weekend meeting of European Union leaders in Brussels
would come up with a substantial plan for dealing with the debt crisis. [     ]
A. when
B. before
C. what
D. that

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There"s a saying in China ________ people with the same family name were brothers and sisters 500
years ago. [ ]
A. that
B. which
C. when
D. where

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Father made a promise ________ I passed the exam he would buy me a bike.
A. that
B. if
C. whether
D. that if

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