问题
选择题
Millie and Kitty are good friends, they often _________ each other _________study.
A．helping; with
B．help; to
C．helping; to
D．help; with
答案
答案：D
题目分析：句意：Millie和Kitty是好朋友他们经常在学习方面互相帮助。often，经常用于一般现在时。主语是复数，谓语动词用原形。help sb (to)do sth,帮助某人做某事，help sb with sth,帮助某人在某方面。故选D