Complete the sentences. Use present perfect.
1)Mr Johnson (become) a writer . 2) Bob and Charles (be) to the States many times . 3) You (swim) in the Pacific? 4)We (not,do) our lessons. 5)I (not , decorate ) the hall. 6) The girls (jump) high. Their results are very good. But they (run) 5 kilometres badly. 7)Betty (begin) learning English. 8) Polly (ring up) Doctor Gordon . 9) Bros (come) back?-No, he hasn't . He never comes back earlier than six. 10) Jane says she (not , see) any of the Harry Potter films before.

1) has become2) have been3) have you swum4) have not done5) have not decorated6) have jumped; have run7) has begun8) has rung9) has Bros come10) hasn't seen