I didn"t take a rest _____ I finished my homework. A. if B. when

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I didn"t take a rest _____ I finished my homework.  A. if
B. when
C. until
D. because

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举一反三

—Is Tom at school today?
—No, he is at home _____ his mother is ill.  [     ]
A. when
B. but
C. if
D. because

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Could you tell me ____ there is a library here? [     ]
A. what
B. how
C. that
D. if

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The teacher spoke loudly _____ everyone could hear him.             [     ]
A. so to
B. so that
C. so as to
D. in order to

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Do you know      she knows it?    [     ]
A．what
B．if
C．whose
D．which

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He places _____ the animals lived many years ago have changed a lot.               [     ]
A. where
B. which
C. that
D. /

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