His uncle gave him books to read but after a page or two he would put book down and pick

问题补充：

His uncle gave him books to read, but after a page or two he would put book down and pick up new one.

A. the,/

B. a; a

C. a; the

D. the; a

答案：

A. the,/

B. a; a

C. a; the

(答案→)D. the; a

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