问题补充:
Helen it if she doesn’t want to.
A. doesn’t need do
B. need not to do
C. needs not to do
D. need not do
答案:
A. doesn’t need do
B. need not to do
C. needs not to do
(答案→)D. need not do
解析:考查动词need 的用法,need 可作实义动词,它的否定形式借助于助动词do,need 也可作情态动词,它的否定形式直接加not,后跟动词原形。从四个选项中可知D正确。