Pul in the verbs in correct form

Bài 1 pul in the verbs in correct form.                 
9. I_____ a letter just a few minutes ago (discuss).                                                            10.they______in London since 1980 (live).   11. Linda is working in this department. she_____(work)here for two years.              12.Up to, john ___good work in the class (do).  13.____their book on my desk last night?(they/put).                                                             14. he__English but it school for six weeks up to now.                                                                  15.Nobody lives in those house. They_ empty for many years (be).                                               Bài 2 Fill in appropriate tense: present perfect or past simple.                                                         6.He's the most difficult custome I (have to-ever)______ deal with.                                   7.Sales (rise)____in 2001 but then (fall)__again in 2002.                                             8.We(sign)__a binding contract last year which is still valid.                                                9.I feel really tired.I(finish -just)___my homework.                                                            10. Look at George! He (have)____ a haircut