Costs have been reduced ___20% over past year.
The wetland park is __________ attractive in spring and autumn, for the weather is pleasant in both seasons.
She has written a book __________ name I can't remember.
The museum will open in the spring with an exhibition and a viewing platform __________ visitors can watch the big glasshouses being built.
The maid is said __________ in the family when she was serving there.
Air pollution is getting more and more serious, so we must take action __________ it is too late.