He’s not a perfect child. He sometimes talks back ____

1—Would you like to hang out with me、—I’d love to. _____ I have to study for the test. （2014云南曲靖）
A.and
B.so
C.but
D.or
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2They are in the same school, _____ in different classes. （2014福建漳州）
A.and
B.or
C.but
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3Jim is always so busy _____ he has little time for his family. （2014江苏徐州）
A.if
B.until
C.that
D.which
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4The little boy is _____ lovely _____ everyone likes him. （2014四川巴中）
A.such；that
B.too；to
C.so；that
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5John didn’t give up looking for a job _____ he got an offer from a German company. （2014上海）
A.until
B.since
C.because
D.if
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6—I can hardly believe my eyes. Is that you, Lucy、—Ye s. It has been almost 20 years _____ we were together. （2014黄冈）
A.since
B.before
C.after
D.until
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7I won’t go to tomorrow’s party _____ I am invited. （2014长沙）
A.if
B.unless
C.When
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8Talk to your teacher and you will get help _____ you have a problem. （2014临沂）
A.unless
B.if
C.until
D.so
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9It’s going to rain. You’d better take an umbrella _____ you may get wet. （2014长沙）
A.or
B.and
C.but
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10Eric arrived on time, _____ it was the rush hour. （2014河北）
A.although
B.because
C.while
D.unless
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He’s not a perfect child. He sometimes talks back _____ his parents talk with him.（2014河南）