所以 all the machinery要用單數動詞is囉 ?
all +可數的複數名詞/不可數名詞=全部整體
machinery為不可數名詞
The factory manager reports that currently all the machinery is operating at full capacity.
工廠經理報告說,目前所有機器都在滿負荷運轉。
(A) will have been operated 將被操作
(B) was operating 正在經營
(C) had operated 曾經營
(D) is operating 正在運行
capacity 容量 才能
7.The factory manager reports that curre..-阿摩線上測驗