Ihave to use 10 word in sentence. can you make sure the sentence structure looks good ?

1- (incidentally), i got my license before i buy my own car
2- i used to (assimilated) and understand the new word before i can explain it to other
3- who has interesting in dissolve materials, must have his own (crucible) witch facilitate his work

4- i spend a lot of time reading about the german (reunification) and its more historical than i was think
5- i have a friend whose american (descent) but can speak more than four language

6- you can be a (bilingualism) person if you study hard
7- (cultural pluralism) to formation an excellent environment to make new friends
8- stone-built houses is one of the most important (heritage) symbols in my country
9- i have been a student at the american english (institutions) for couple months ago
10- there are many (hypotheses) that precede the inventions that we know

1. find at least 9 adjectives from this opening passage used to describe the setting of the story- "to build a fire" setting: day had broken cold and gray, exceedingly cold and gray, when the man turned aside from the main yukon trail and climbed the high earth-bank, where a dim and little-travelled trail led eastward through the fat spruce timberland. it was a steep bank, and he paused for breath at the top, excusing the act to himself by looking at his watch. it was nine o'clock. there was no sun nor hint of sun, through there was not a cloud in the sky. it was a clear day, and yet there seemed an intangible pall over the face of things, subtle gloom that made the day dark, and that was due to the absence of sun. this fact did not worry the man. he was used to the lack of sun. it had been days since he had seen the sun, and he knew that a few more days must pass before that cheerful orb, due south, would just peep above the sky-line and dip immediately from view.