eachof后加什么謂語

　　Each of us must take responsibility for our own actions.

　　我們每個人都必須對自己的行為負責。

　　Each of the main parties fielded more than 300 candidates.

　　每個主要政黨都選派出300多名候選人。

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

　　這些磁帶的每一位作者都是其領域內的專家。