问题补充:
We have made a rule in the office.
A. this, not to smoke
B. it, smoking
C. it, to not smoke
D. it, not to smoke
答案:
A. this, not to smoke
B. it, smoking
C. it, to not smoke
(答案→)D. it, not to smoke
解析: 考查it作形式宾语。真正的宾语是 in the office,所以made后面用it作形式宾语。根据句意,应是把不吸烟作为规定,所以排除A,B;且不定式变否定,是在to前加not,所以选D。