"I've bought a ring," he said to his girlfriend

The security guard suspected me and opened my bag

Opening my bag, the security guard looked at me suspiciously

Because the security guard looked at me suspiciously, I opened my bag

His application has been rejected by the letter he received

It is said in the letter he received that his application has been rejected

That his application has been rejected is why he received with the letter

You can't remove any products from the nature, so it is illegal

Because you can't remove any products from the nature, it is illegal

You can't remove any products from the nature unless it is illegal

Ann is not working at her office because the painters are working there

The painters who are working at Ann's office ask her out during the week

The painters are using Ann's office this week as they are working there

Earning their own money encourages students to spend it wisely

As they earn their money by themselves, students tend to spend it wisely

Earning their own money tends to make students spend it wisely

Joanna insisted on going for a walk because they had been working all day

Joanna suggested going for a walk because they have been working all day

Joanna suggested going for a walk because she had been working all day

It's a too big company for two-hundred people employed

The company is too big to employ two hundred people

Two hundred people are employed by the company

Sam has been promoted because she has a new job title to get a higher salary now

Getting a higher salary after having a new job title had made Sam promoted

Having been promoted, Sam has a new job title and gets a higher salary now

The student said that he definitely didn't want to work, but he needed to

The student said that he definitely didn't want to work, but he had needed to

The student said that he definitely hadn't have wanted to work, but he needed to

She will be worried about the conference tomorrow if she is giving a speech

She will not be worried about the conference tomorrow if she was giving a speech

She would be worried about the conference tomorrow if she is giving a speech

Bob is sorry for not coming to Jane's birthday party last Friday

Bob makes excuses for not coming to Jane's birthday party last Friday

Bob wishes to come to Jane's birthday party last Friday

After having a talk with your potential employer about how many hours you can do per week, commit yourself to a position

Having talked with your potential employer about how many hours you can do per week, you should commit yourself to a position

No sooner have you talked to your potential employer about how many hours per week you can do than you commit to a position

They told their son that we had seen a strange man in the garden

They told their son that we saw a strange man in the garden

They told their son that they saw a strange man in the garden

Emily said that we were staying in tonight

Emily said that they were staying in tonight

Emily said that we were staying in that night

She told that they had been to work the day before

She said that they had been to work the following day

She said that she had been to work the day before