20. Solving crossword puzzles _________ fun to many readers of this popular newspaper.
(A) is
(B) are
(C) be
(D) being。

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統計： A(124), B(16), C(5), D(6), E(0) #3270056

詳解 (共 1 筆)

#6155355
Solving crossword p...
(共 305 字，隱藏中）
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