问题补充：
Who did the teacher have an article for the wall newspaper just now?
A. written
B. writing
C. write
D. to write
答案：
A. written
B. writing
(答案→)C. write
D. to write
解析：此题易误选A，受have的影响。其实此处所用句型为have sb.do
sth不妨把who换为tom，利用还原句子结构的方法变为肯定句：The teacher had
Tom write an article for the wall newspaper just now.因此，答案应选C。
