初一英语上册b动词填空答:be (be/is/are/am/was/were)现在时 I am, you are, he is, we are, you are, they are 过去时 I was, you were, he was, we were, you were, they were 参考资料:<a href="http://baike.baidu.com/view/585473.htm" target="_blank" rel="nofollow noopener">http://...