Present Perfect Continuous: 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 20, 21, 22, 25, 26, 27, 28
Present Perfect Simple vs. Present Perfect Continuous
Other exercises: 2, 6, 7, 8, 9, 12, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 30, 31
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