a Chinese, I feel proud of my country and thecontributions _________have been made to the world culture

Everybody in the little town knew my first teacher, so we had no _____ finding his home.

Theexpertssuggestedtheproblemworthpayingattention____atthemeeting. [ ]

She’s having a lot of trouble with the new computer, but she doesn’t know whom to ________.

I want to return the book to John, but I can’t findhim.–He­­­­______ the library. You can find himthere.