When I got back home I saw a message pinned to the door “Sorry to miss you; will call later.”
A. reading
B. reads
C. to read
D. read
网友回答
(答案→)A. reading
B. reads
C. to read
D. read
解析：message 与read是主动关系。句意：当我回到家时，我看见在门上别着一张纸条，纸条上写着，对不起我没有见到你，以后会给你打电话。故选A。