rewrite each sentences in the causative form. if there's a star (*) at the end of the sentence, don't use by. ​

1. They had their drinking water tested by an expert.

2. She has her smoke alarms checked by an electrician once a year.

3. We are having our flat redecorated at the moment.

4. Megan has had her pet tarantula examined by a vet.

5. My grandparents are going to have the tree in their garden cut down.

My grandparents are going to have the tree in their garden cut down.

We are having our flat at the moment.