Some examples and use cases from the internet:

Some examples and use cases from the internet:

• I haven't been able to go into his study since he died.
• If the silicon contained in these 'fluorides' were listed, the fluorides would have to be labelled, and subjected to toxicological studies since silicon is a known carcinogen.
• The Commission has been in possession of the results of the study since spring 2004.
• Have the results of the studies since been submitted to the Commission?
• However, the waste treatment centre did not undergo an impact assessment study since it was authorised in 1977, long before Spain joined the Community.
• There was something she'd wanted to study since she was young, and she said she wanted to go really badly.
• It's been hard to study since... I was sick and stuff.
• To tell the truth, I haven't had the courage to go into his study since...

• Tom has been studying in his room since dinner.
• The Navy's been studying leadership since 1775.
• You should have been studying those lessons since day one.
• We have been studying the issue since 1985, and I think we know enough.
• I have been studying the monitoring reports since the storms.
• I did, but I've been studying since then.
• Young man, I've been studying insects since I was 8 years old.
• I've been studying chimpanzees in Tanzania since 1960.