Tom’s mother always told him not to smoke again, but _____ didn’t help.
No, I’m too busy right now. Please give me an hour, _____?
Only after her mother came to help her for the first few months _____ to begin her propjet.
I didn’t know that he was a cheat, or else I ________________ him.
Investment by Chinese companies in the US _____ rapidly in recent years.
After starting work, Cao spent his evenings _____ in his books and was eventually admitted to a secondary technical school.