Change the sentences keeping the same meaning . 1. joe collected his stamps in 3 years . it took 2. joe is looking for some new stamps with his friend now joe and his friend 3. stamps with flowers cost less than the others . stamps wiht flowers weren't 4 . i want to do well on the test , so i can go ro the university . if 5. it was a mistake not to study for the exam . not 6. i feel nervous in rainy weather . rainy weather 7 . i saw margaret . she was crossing the street . i saw margaret 8 .the old man watched the children . they were playing in the park . the old man watched the children 9 . the lesson bores the students. it is a lesson 10 . the news surprised us . it was news