There is _____pollution and ____fishes in the river now than 20 years ago.

How can you study in the living room when other people are watching TV? I think you need a _______ place.

--We spent all our money because we stayed at the most expensive hotel in town.--Why didn’t you stay at _________ one?

The actress is already 50, but she looks       than she really is.

—Which month has ______ days in a year?—February.