委员会由选举产生的领导和公民组成。

The committee was ___composed of elected leaders and citizens.

它由50多名成员组成，他们对电影有各种品味：老的和现代的、喜剧、动作等等。

It is ___composed of more than 50 members, and they have various tastes in film: old and modern, comedy, action, and so on.

水由氢和氧组成。

Water is ___composed of hydrogen and oxygen.