There're too many difficulties for us to_____.A know about B make a decision C deal with好像三个都可以,但参考答案选的B,

There're too many difficulties for us to_____.A know about B make a decision C deal with好像三个都可以,但参考答案选的B,
There're too many difficulties for us to_____.A know about B make a decision C deal with
好像三个都可以,但参考答案选的B,

There're too many difficulties for us to_____.A know about B make a decision C deal with好像三个都可以,但参考答案选的B,
know about 和 deal with后面都要跟宾语,现在你句子后面没有内容了,所以不可以选

B
其他两个都要跟宾语，否则意思不全。所以只能选B

A 有太多的困难去知道...know about what?
B 有太多的困难去做出决定。句子意思完整
C 有太多的困难去克服...deal with what?克服困难不用deal with