Something known by a lot of people, is " common " knowledge.
Answer and Explanation:
Commitment to the outside world allows European nations to establish commercial, political and social relations with countries outside Europe that can offer elements and factors that Europe does not have, but which are necessary for its progress. This type of relationship requires the commitment of Europe, and when this commitment is strong and efficient, these reactions are also strong and manage to promote the progress and rise of European countries. However, when commitment is deficient and weak, relationships can be broken, or even not started, which can help the return and downfall of European nations.
Answer:
a. I am now swimming for an hour.
b. he has been playing this guitar since he was seven years old.
c. how long are they discussing?
d. she's been collecting dolls for 3 years
e. the office has been using this machine since 1997.
