We are currently working on two new projects, ____ can help the company seize a bigger market if we succeed. 為什麼 both of them 是正解?

更新: 選項如下
(1) both of which
(2) both of them 正解
(3) they both
(4) both
更新 2: 抱歉寫錯!
正解是 (1) both of which
1 個解答 1