good manners to say “Sorry” when you knock into someone but no need to say it again and again .
A.There are ; there is | B.It is ; there is | C.There is ; it is | D.It is ; it is |
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good manners to say “Sorry” when you knock into someone but no need to say it again and again .
A.There are ; there is | B.It is ; there is | C.There is ; it is | D.It is ; it is |