Question

Chage into passive
1. They promised the workers higher wages
2. They say that she is a very poor housekeeper

Answer 1

1. Higher wages are promised to the workers by them.
2. She is a very poor housekeeper is said by them.

Answer 2

1.The workers were promised by them for higher wages.

2.Cannot change into passive.

There is also a mistake in the question.

The given question is in indirect speech.

The correct question is

They say that she was a very poor housekeeper.