$1.$ Is looking a person directly in the eyes when you are having a conversation with him or her polite?

-->Yes

$2.$ What do people think when you lookdown or to the side when you are talking to them?

-->People who are speaking will sometime look away for a few seconds when they are thinking or trying to find the right word. 

$3.$ After looking away for a few seconds to think and find the right words, what do the speakers do?

-->They always turn immediately bank to look the listener directly in the eyes.

CHÚC BẸN HỌC TỐ

1/Yes.

2/People think you are not interesting in what he or she saying.(not polite)

3/The speakers always turn immediately back to look the listeners.