羽田机场免税店优惠券:It's difficult for us to meet and is it to part

It's difficult for us to meet and is it to part It's difficult to get to know a reserved people It’s difficult to keep up _______ these changes in fashion What's the most difficult train to catch? It's Sunday It's ( ) It's dele It's a f u c ked-up world with f u c ked-up lies!这个句子有没的问题？是不是对的？ It's a r_______jaket It's All Vain