Điền giới từ thích hợp

1. I'm worried ........ my most recent water bill. It's enormous

2. Mrs.Mi gives Mrs.Ha advice .......... how to save water

3. Most of our electricity now comes ... nuclear power

1. Although he wasn't good at English, he had a goob job in a travel agency

He wasn't ..................................................................................................

2. It was so cold, so we decided not to go camping

Since ...................

3. He couldn't go to school becauese of his sickness

As .........

4. She missed the bus because she got up late

She got up ...........................