John and I＿＿＿friends for eight years.We first got to know each other at a Christmas party.But we＿＿＿＿＿ each other a couple of times before that. 

With the country’s population reaching 1.6 billion in the mid of this century, most of China’s rivers, including the Yellow River, ________.

Once new difficulties _________ in your work, it’s always important to use your brains．

— The food here is nice enough.— My friend ______ me a right place.

Playing computer games ______ much of his time.