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Ответ:

4.German immigrants took the hamburgers to the USA.

5.It's convenient. It's a cheap and tasty way to fill their belly when they don't have time to make a home made meal or when they just want to treat themselves.

6.many of them criticize fast foods, thinking that they are junk food. even if we compare fatty, homemade food with it (homemade food is always delicious), they are similar in calorie content.

Объяснение:

рада была помочь.