Quickly!Tom give me pen to mark the page.I seeunder the book.A. /；it B. a;thatC. the;one D

问题补充：

Quickly!Tom，give me pen to mark the page.I seeunder the book.

A. /；it

B. a;that

C. the;one

D. a;one

答案：

A. /；it

B. a;that

C. the;one

(答案→)D. a;one

解析：本题考查冠词。第一空后pen为可数名词，表泛指；第二空，指同类的物，用one。