Open the brackets.use the present perfect tense 1)we (learn) a lot of new words since last year 2)mrs olivier (live)

1) We have learnt a lot of new words since last year. 2) Mrs. Oliver has been living in Boston since last year. 3) John has lost his keys. 4) Lately Ben has not attended the class meetings regularly. 5) I have been very busy this week. 6) He has already finished his work. 7) Professor Higgins has never taught in this University before. 8) They have moved to New York. 9) It`s mum`s birthday tomorrow, but I have not bought her a present. 10) They are not at home now. They have gone out.