问题补充：
---Where you last night? I called you, but got no answer.
---Sorry. I out with my brother.
A. was; were
B. were; was
C. did; were
D. did; was
答案：
A. was; were
(答案→)B. were; was
C. did; were
D. did; was
解析：句意;昨天晚上你在哪,我给你打电话但没有人接。对不起，我和哥哥在外面。last night,昨天晚上，过去时的时间，主语是you,第二人称，故系动词用were,I 第一人称单数，系动词用was..故选B。
