Поставьте предложения в present perfect. 1) i (read) books of english writers. 2) he (not take) my bag. 3) you (be) to london? yes, 4) sam and polly (not write) a letter abroad. 5) children (swim) in the pool this morning. 6) john (finish) his work yet? no, 7) many tourists (visit) moscow this year. 8) i (not speak) with him since childhood. 9) mary (eat) in the restaurant? 10) after university he (become) a famous scientist.
