I'm doubtful about the grammar of this sentence, could you please help me? ... I would also like to know what equipment you are not providing in order to bring only the needed one." ... Is the word needed there correct? or NECESSARY?

What is the basis of your confidence?   

How hard is it to learn English for an Chinese speaking person?    

What is the importance of learning English?   

Is it hard to learn English if you don't live in an English country?   

Do you think reading is boring?   

Do you like reading books, or do you get bored easily?   

We______last night,but we wentto the concert instead. A.must have studied B.might study C.should have studied D.wouldstudy Which one will you choose?why the other can't be use?

I have seldom seen my mother______pleased with my progress as she is now. A.so B.very C.too D.rather Which one do you choice?why the other can't be use?