Question

Find mistakes

Answer 1

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.