copies of Mo Yan’s works will be on sale after his talk at the Press Conference.
A. Signing
B. Sign
C. Signed
D. To sign
网友回答
A. Signing
B. Sign
(答案→)C. Signed
D. To sign
解析：考查分词做定语。本题中的动词sign与名词copy之间构成了被动的关系，故或使用过去分词来修饰名词。如果是单个的过去分词修饰名词，要放在名词的前面；分词短语要放在修饰的名词的后面。句意：莫言在新闻发布会以后，他的签名的书将会被出售。故C正确。