Fill in the blanks with the correct forms:1. She is a very and charming person
A. consider
B. consideration
C. considerate
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2. We hope we can even more closely in the future.
A. coorperate
B. coorperation
C. coorperative
3. This year they have introduced 3 new products to their range.
A. extend
B. extened
C. extension
Fill in the blanks with the missing words from the background knowledge:When your are about to leave, it is always polite and friendly to say some to them before they leave.
It is for people to leave abruptly without saying anything, especially for .