1. It is lovely to seeing you again .
->seeing => see
2. People cut the bottles in small pieces
->in => into
3. People mix the small pieces in certain chemicals
-> in => with
4. Cloth bags used instead of plastic bags
-> used => are used
There is mistake in each of these sentences underline the mistake and then correct it :
1. It is lovely to seeing you again .
-> see
2. People cut the bottles in small pieces
-> into
4. Cloth bags used instead of plastic bags
-> was used