Answer:
If there [is] too much garbage, the air will be seriously polluted.
What a pity[,] I have to look at my little brother, so I can't go to the cinema tonight.
Explanation:
Any sentence with if at the beginning is usually present tense.
Commas always go after "What a pity".
I also did not see periods at the end of both sentences.
Answer:
https://www.chegg.com/homework-help/questions-and-answers/g-indicate-whether-amount-l-affects-bank-book-side-bank-reconciliation-2-addition-subtract-q51442997
Answer: I'm pretty sure it's a, but I'm not 100% sure
Sentence:
<h3>Judy and her dog run on the beach every morning.</h3>
Hope this helps
<h2>--SirGerick--</h2>
Ask me if you need me to answer your question!
preposition = under
object of the preposition = covers