The fixed star was a planet.（）
A、madeofD
暂无解析
The United States is a country_ (advance) in science and technology
Ourmost________(success)productisbasedonaverysimpleidea
In studio recordings, new techniques made possible effects that not even an electronic band could produce .
Apersonisluckyifhiscareer________withhisinterestandhobby
Decision makers must have some way of determining of several alternatives is best.（）
