You should be grateful to your employees, because you wouldn't be_you are now without them.
--- Don’t forget to bring my new books tomorrow afternoon. --- No, I ______.
When he was alive, the old scientist used to say that knowledge ______ from practice and he gained his experience by doing a lot of practical work.
He ______ articles for our wall-newspaper these three years, and he ______ about forty articles.
--- ______ Betty this morning? --- Not yet, but she is sure to be here before noon.
--- Is Tom still smoking? --- No. By next Saturday he ______ for a whole month without smoking a single cigarette.