The first textbooks_C__for teaching English as a foreign language came out in the 16th.A.having written B.to be written C.being writte...
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回复(1) 2007-11-07 18:13 来自版块 - 
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teacher1应该选D吧。因为being written表示正在进行时,而显然书已经出来了。所以用written表被动。不知你是不是也选这个。(2007-11-08 00:24)

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