Key Exercise 2A, page 133 - Present Perfect vs Past Simple

a) 1 he hasn't arrived yet; 2 We haven't seen each other; 3 Have you ever written; 4 She's never been to; 5 I lent him €50; 6 I've known them for ten years; 7 What year did you leave; 8 We have already been; 9 she hasn't replied yet; 10 They've lived in that house

b) 1 have you been, started, lived, moved, 've lived 
       2 Has your brother found, 's just started
       3 Have you ever been, went, was, cost