问题
选择题
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
答案
答案：B
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。