问题补充:
Mr Zhang encourages the poor students study.
A. not giving up
B. to not give up
C. not to giving up
D. not to give up
答案:
A. not giving up
B. to not give up
C. not to giving up
(答案→)D. not to give up
解析:句意:张先生鼓励这些贫困的学生不要放弃学习。考查短语:encourage sb. not to do sth. 鼓励某人不要放弃做某事。 故选D