I wonder ____ you can give me a hand. I really need some help.

问题描述:

I wonder ____ you can give me a hand. I really need some help.
A that
B if not
C if
D what

选C 因为if在这里是是否的意思.而wonder就相当於want to know想知道的意思.
而整句话的意思是我想知道你是否能够帮助我,我需要帮助.