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Ответ:

a)has just read

b)haven't meet

c)gave us

d)did you buy

e) hasn't invited

f) Has he written

g)has just phoned

h) had

4. have ever been, visited, walked, swam, tried, didn't visit, have you ever been

5. inactive

unbelievable

illogical

impossible

unforgettable

imbalanced

6. 1. lifeguard

2. responsible

3. impossible

4. landmarks