Lucy"s birthday party didn"t start _____ all the friends arrived. [ ]A. sin

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Lucy"s birthday party didn"t start _____ all the friends arrived.  [     ]
A. since
B.  until
C.  while

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举一反三

__________ these young giant pandas grow up, they are __________ the necessary skills to live in the
wild __________.[ ]
A. When, teach, on their own
B. When, taught, on themselves
C. As, taught, on their own

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_____ the king cobra looks scary,  it is not as _____  as the golden poison dart frog.[     ]
A. But,  dangerous
B. Although,  poisonous
C. Although,  danger

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He wants to be a reporter ＿＿ he thinks it"s an exciting job.    [     ]
A. and
B. so
C. because
D. why

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              I can see, this is the only way to go to the post office.                [     ]
A. As long for
B. As far as
C. Just as
D. Even if

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John likes watching soap operas,_  __ Jack likes game shows.    [     ]
A. while
B. but
C. yet
D. when

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