21. You should keep quite in the library. No conversation or other types of noise _____ in this area.
(A) permit
(B) are permitted
(C) are permitting
(D) been permitted

答案：登入後查看
統計： A(36), B(387), C(41), D(41), E(0) #2228390

詳解 (共 1 筆)

#3957736
在圖書館你應該保持安靜。在此空間談話或是...
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