When I got back home I saw a message pinned to the door “Sorry to miss you, will call later.”
A. read
B. reads
C. to read
D. reading
网友回答
A. read
B. reads
C. to read
(答案→)D. reading
解析：本题考查-ing形式作定语。此题中a message 由pinned to the door 说明其位置，由 “sorry …later”说明内容。因“a message + read”之间建立的是主动的主谓结构，故用-ing形式，选择D项。此题难度较大。