Put questions to the sentences. Begin with the word given in brackets.
1. I have been to Riga. (Have) -
2. Last summer they visited his little farm. (When) -
3. My friends are going to travel by bike. (How) -
4. Next month the doctor will go abroad. (Who) -
5. Look! The little boy is crying. (Why) -
6. This unusual concert takes place in the open-air theatre. (Where) -