As we all know, it’s not polite to keep others_________for a long time.
Although he sometimes loses his temper, his students like him ________ for it.
________ all over the hills and around the lake are wild flowers of different kinds.
I think that this meal was well worth ________ was charged for it.
—The experiment is of particular importance. —I see. We will carry on with it ________ we can get enough money.
When people move to another country, they often try ________ the customs of their native land.