I soon found that the work I was doing had already been done by someone else.________，I was wasting my time.

 Do your best to remember other people's names and interests, which shows you ________ them.

Here's my card. Let's keep in ____.

--- Your neighbors may ______ you with playing your radio too loudly at night.--- I know. They never say anything that ______ me especially.

—How about your travel? —You can hardly imagine what difficulty we have had ___________ the vast desert.