Text: note that if there's an item with a sad smiley next to it, it means that the customer doesn't like this item. if there's a happy smiley, the customer likes it. add the items the customer likes and avoid those he/she doesn't like.

Correct capitalization: Note that if there's an item with a sad smiley next to it, it means that the customer doesn't like this item. If there's a happy smiley, the customer likes it. Add the items the customer likes and avoid those he/she doesn't like.

Text: ask workers to complete your tasks to get results.

Correct capitalization: Ask workers to complete your tasks to get results.

Text: an investigation will be carried out to describe the normal procedure for managing building and construction waste in the municipalities.

Correct capitalization: An investigation will be carried out to describe the normal procedure for managing building and construction waste in the municipalities.

Text: this product was added to our catalog on tuesday 23 august, 2016.

Correct capitalization:
This product was added to our catalog on Tuesday 23 August, 2016.