1.students of their school / uniforms encourages / students to be / I think wearing / proud of being /./
-> I think wearing uniforms encourages students to be proud of being students of their school.
2. style and size / helps students feel / Wearing casual clothes / choose their favorite / comfortable as they can /. /
-> Wearing casual clothes helps students feel comfortable as they can choose their favorite style and size.
3. leaking from the vessel /A ship has an / pollutes the water / and kills marine life / accident and the oil /./
->A ship has an accident and the oil leaking from the vessel pollutes the water and kills marine life
4. enhance family / traditions and bring / The event will be / family members closer / a good occasion to /./
->The event will be a good occasion to enhance family traditions and bring family members closer.
5. where people coming / over the world live /a multicultural country / United States is / from all /./
-> United States is a multicultural country where people coming from all over the world live.
6. Over the next few / places of interest in the city / as well as many other Cu Chi Tunnel / days they visited /. /
->Over the next few days they visited Cu Chi Tunnel as well as many other places of interest in the city
7. fashionable clothes is / that wearing / You should remember / as wearing suitable clothes/not as important/.
-> You should remember that wearing fashionable clothes is not as important as wearing suitable suitable clothes.
12.to speak a foreign / others at / language with / Academic of Language ?/ Why not learn /./
-> Why not learn to speak a foreign language with others at the Academic of Language