1. The vocabulary and grammatical differences between British and American English are so trivial and few as hardly ________.
a. noticed b. to be noticed c. being noticed d. to notice
The key is 'b'. Could you please analyze the grammar? If the basic structure is too+adj.+to do, then what does this "as hardly" function?
Just give my two cents words to your first question: It should be the usage of the phrase " so as to", that means " so + trivial and few + as hardly to be noticed". Do you think so?