读句子和对话,选出正确的答案。
1.Did you ________ (come, came) by train?
2. ________(Does, Did) she live in Beijing last week?
3.Look! It ________(is, was) a postcard from Tianjin.
4.We ________ (went, go) to a concert last week.
5.—Did he visit San Francisco?
—Yes, he ________(does, did).