问题补充：
This is the last time I Shanghai. I still remember the first time I there was in .
A. have visited, went
B. had visited, went
C. visited, had gone
D. had visited, had gone
答案：
(答案→)A. have visited, went
B. had visited, went
C. visited, had gone
D. had visited, had gone
解析：本题第一空考察固定句式为：It/This is/was the序数词 time that从句，句意：是某人第几次做某事的时候了。如果前面是is，后面就使用现在完成时；如果前面是was，后面就是过去完成时。因为前面是is，所以后面使用了现在完成时；第二空描述的是在所发生的事情，使用一般过去时。句义：这是我上一次去上海的时候，我仍然记得我第一次到那里的情况。故A正确。
