Though some foreign scientists had a ______ opinion of his new invention, his fellow workers never thought ____ of it.

 People say that young Chinese students’ eyesight keeps dropping _________ because of both too much homework and poor learning conditions.

He speaks English well indeed, but of course not ______ a native speaker.

________，the search engine just gave me some brief introductions rather than the whole content of the book to read.

A ____ road goes ____ from our village to the center of the town.