It is such ____ unusual work of art that the museum has decided to buy and keep it.
(A) an (B)/
我想选B ,因为work不可数,但是答案是A,
(2)If ____ down a second time,the man will have one more try.
(C) turning (D) turned
我想选C,但是答案是D,不知道为什么这里要用被动