— How are you getting on with your work? — Oh, I’m sorry. Things aren’t going so well as _______.

I think going swimming in my spare time, _____ I think is great fun and good exercise as well as a useful skill.

The professor, _____ some of his assistants, _____ to attend our discussion this afternoon.

--- I wonder how much you charge for your service. --- The first two are free ______ the third costs $30.

5. “Was his father very strict with him when he was at school?” “Yes. He had never praised him _______ he became one of the top students in his grade.”