.Our knowledge of computer_growing all the time.A.be B.is C.are D.were
问题描述：
.Our knowledge of computer_growing all the time.A.be B.is C.are D.were
答
Our knowledge of computer_is growing all the time.A.be B.is C.are D.were 解析
knowledge 知识不可数,所以手机单数is可是our是第三人称单数，为什么不用are？Our knowledge of computer才是真正完整的主语啊 翻译：我们的电脑知识一直在增长。