slm
23)but 24)so/and 25)or 26)but
27)my father gave Amir a present for his birthday
28)active: scientists find soluthions to problem
passive:solutions were found by scientists to problem
29)by 30)was invited 31)up 32)whom
33)light bulb inventions
34)new jersey 35)big factory in menlo park
36)observe of anything
37)false