Put the verb in brackets in the correct form.

Simon Harker (qualify) as a doctor in London in 1983. He then (go) to New York where he (train) as a psychoanalyst. He (work) in California in the late 1980s and in 1990 he decided (return) to England. Since then he (live) in Oxford and (work) at clinic near London. He (specialize) in treating children until last year, but for the last few months he (work) with adults who (lease) a member of their family. His methods (be) very successful at present. Many experts often ask him (attend) conferences. He (to be going give) a lecture next month. Today he was invited to a conference in Vienna. But he (notcan) accept the invitation because he is very busy, working with his patients, although he likes (deliver) lectures