If you want to be a factory manager, you must learn to make machines.

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If you want to be a factory manager, you must learn            to make machines.    [     ]
A. what
B. when
C. where
D. how

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举一反三

I like sofa            it"s much softer than a chair.    [     ]
A. if
B. after
C. because
D. that

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         you are in Hangzhou, please buy me some green tea.      [    ]
A. Because
B. While
C. As
D. Though

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You should return the digital camera to Sally _____she will not be angry.      [     ]
A. so that
B. because
C. before
D. so as

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I hope to go to France some day _____ there are many famous art museums there.   [     ]
A. when
B. if
C. because
D. whose

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I"ll write to you              I get there.         [     ]
A. as soon as
B. since
C. so that
D. until

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