It is unkind of you to talk to her like that . Should 
→ .....You should not have talked to her like that. 
Because/acid rain / dangerous, /lot /tree's leaves/ be / damaged 
→ ....Because of the dangerous acid rain, tree's leaves are damaged.
Polluted water / result / death / fish 
→...Polluted water results in dead fish.
1. D. painting ⇒ painted
Painted ( bị động ở thì HTTD )
2. C. do ⇒ make
Make ( cụm từ make effort : nỗ lực )