1. Does our teacher or do the students of our group know two foreign languages?2. Did I visit my friend on the 25th of March or on the 1st of April?3. Are we going to write a dictation or a poem)?4. Is their flat on the second floor of a new house or of an old house?5. Will I go to Moscow or to London to see my parents?6. Are there many flowers or bushes near our Institute?7. Did I speak to Jim or to Ann about the plan yesterday?8. Has Tom just repaired his bike or his car?9. Will Helen have finished her composition by five or by nine?10. Did we live in the country or in town last summer?11. Have I never been to Greece or to Egypt?12. Are these books too difficult or easy for me?13. Do all children like skating or tobogganing?14. Did he live in Rostov or Paris in his childhood?15. Did Columbus discover America or Africa 500 years ago?