____ you stay up late tonight, you won"t finish the work. [ ]A. Unless

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____ you stay up late tonight, you won"t finish the work.   [     ]
A. Unless
B. Because
C. If
D. When

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举一反三

Bob would give the money to charity ____ he got a million dollars.    [     ]
A. that
B. if
C. whether
D. until

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—____ you get home late after school?
—My mother will be angry with me.    [     ]
A. What if
B. How about
C. Even though
D. As if

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—What were you doing _________your mother was cleaning up the room?            —I was reading a book.[     ]
A. until
B. if
C. while
D. though

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Tom never does his homework _______ Mary.  He makes lots of mistakes.        [     ]
A. so careful as
B. as carefully as
C. carefully as
D. as careful as

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I"m really shy and just don"t know what to do in front of people. _______I don"t know anyone there?     [     ]
A.  What if
B.  How if
C.  What"s up
D.  Why

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