-Are you having __________ good time?-Yes, but I"m feeling tired. I want to have

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-Are you having __________ good time?
-Yes, but I"m feeling tired. I want to have __________ rest.[ ]
A. a; /
B. /; a
C. a; a
D. the; a

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举一反三

Beijing has got __________ population of more than 13.8 million.[ ]
A. the
B. a
C. an
D. /

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—Mr. Green has _____ one-year-old son, doesn’t he?
—Yes, and he also has _____ 8-year-old daughter.[     ]
A. a; a
B. an; a
C. a; an
D. an; an

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The boy with______ unusual face said that he had______ useful machine at home.[ ]
A. an, an
B. a, an
C. an, a

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_________ my students are good at English.[ ]
A. The number of
B. A number of
C. a lots of

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The little boy wrote _______ "U" and ________ "N" on the wall.[ ]
A. a; an
B. an; a
C. a; a

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