问题详情：
Robert often asks us _______his Chinese, so his Chinese is much better than before.
A． help him B． to help him with
C． to help with D． helps him with
【回答】
B
【解析】
试题分析：句意：罗伯特经常要求我们帮助他学习汉语，所以他的汉语比以前好多了。不定式可以用作宾语补足语。后面可以接不定式作宾语补足语的动词有 ：ask， teach， expect，tell， allow等。Help sb. with：帮助某人做某事，结合句意可知选B。
考点：考查动词不定式和固定词组。
知识点：其他
题型：选择题
