问题补充:
Now in some schools it isn’t odd for students to go to school seven days a week. would be strange.
A. To not do so
B. Not to do so
C. Don’t do so
D. Doing not so
答案:
A. To not do so
(答案→)B. Not to do so
C. Don’t do so
D. Doing not so
解析:考查非谓语动词。A和D都是选项本身形式错误,因为非谓语动词的否定式是把not放在最前面;选项C是祈使句形式,空格后面已经有了would,如果选的话,会有两个谓语动词。故选B。