№31. encourage2. threatening3. protection4. unreliable5. succeed№41. have you made2. was doing3. had made4. makes5. are making№51. in _ space2. what _ good advice3. the Petrovs4. on the fifth floor5. across the Atlantic6. the USA is situated in _ North America7. in the Alps8. _ Paris is the capital of _ France9. eight hours a day