问题补充：
after a long walk, Henry called me and said he couldn’t come to the meeting.
A. Having worn out
B. Being worn out
C. To wear out
D. Worn out
答案：
A. Having worn out
B. Being worn out
C. To wear out
(答案→)D. Worn out
解析：考查非谓语动词。根据题意可知此处为状语，用法为sb be worn out，故排除A,C。 此处worn out=Because he was worn out after a long walk, Henry called me and said he couldn come to the meeting.
