It’s getting late but they still .[ ]

I found ______ not very difficult to keep away from the A/H1N1 Flu.

My American friend Sam is interested in Yangzhou very much. He wonders _______.

Excuse me, I want to buy some food. Where can I find a supermarket？ —I know ________ not far from here. You can easily find ________.

______ unless I call you.