Now in some schools it isn’t odd for students to go to school seven days a weekwould be

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。