词语运用

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It is often said that eyes can speak. Do you have such kind of    On a bus you may look at a stranger, but not too long. If he ___ that he is being looked at, he may feel uncomfortable. It is the same in daily life.      you are looked at for several more times, you will look up and down in order to see if there is anything wrong with you. If nothing  ____ wrong, you will feel angry      the person who is looking at you. Eyes can      , right Looking too long at someone may seem to be  . But sometimes things are different. If you wish to draw someone's attention, you may look at him or her for ____ than ten seconds. For lovers, they enjoy   at each other longer to show the love that words cannot express. Clearly, eye communication should be      according to the relationship between the two people and the certain situation.