---Have you received Jack’s plan? ---Yes, but I don’t think his plan is _____.
Habits are like food we eat every day, which have both positive and negative effect our lives.
For centuries the upper classes in Britain spoke French ______ the common people spoke English.
As a matter of fact, it was the third time that we ______ your school.
--- There's going to be a concert this evening and we want to go there very much. --- The question is ______ we can get a couple of tickets.
People who are addicted______ drugs cannot go without them for a few hours.