Bob spends a lot of money on books __________he is not rich! [ ]A．if

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Bob spends a lot of money on books __________he is not rich!    [     ]
A．if
B．though
C．when
D．because

答案

举一反三

______they are twin sisters, they don t look like each other.              [     ]
A. Because
B. Since
C. Though
D. However

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_____ Mr. Green is ill, _____ he still goes to school.         [     ]
A. Although; /
B. Although; but
C. But; although
D. /; /

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______the junk food is unhealthy, John ______ it.    [     ]
A. Because; likes
B. Although; likes
C. Although; dislikes
D. So; dislikes

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Mozart could play the piano _____ he was 5 years old. [     ]
A. before
B. aftcr
C. when
D. until

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I don"t like washing my car_______it is very dirty.        [     ]
A. so
B. because
C. but
D. although

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