Present Perfect Simple or Present Perfect Continuous

exercise 1,   exercise 2,   exercise 3,   exercise 4  

exercise 1,   exercise 2,   exercise 3,   exercise 4,   exercise 5,   exercise 6,   exercise 7,   exercise 8,   exercise 9,   exercise 10,   exercise 11,
exercise 12,   exercise 13  

test 1 (level 1),   test 2 (level 2)