eachof后加什么谓语

Each of us must take responsibility for our own actions.

我们每个人都必须对自己的`行为负责。

Each of the main parties fielded more than 300 candidates.

每个主要政党都选派出300多名候选人。

Each of the authors of the tapes is an expert in his field.

这些磁带的每一位作者都是其领域内的专家。