Present Perfect SIMPLE: Ex 1(result), 2(result), 3(news), 4 (experience), 5, 6, 7 (for/since),
Present Perfect or Past Simple?: Ex. 1, 2, 3, 4, 5, 6, 7, 8,
Present Perfect Continuous: Ex 1, 2, 3, 4, 5
Present perfect Simple or Continuous: Ex 1, 2, 3, 4, 5
Present Perfect simple / Continuous vs Past Simple: Ex. 1, 2, 3, 4, 5
Future Ex.1 (arrangements), 2 (timetables), 3 (going to), 4 (interpret signs), 4 (decision Will), 5,