Simon __________(be) born in Shanghai but now he _________(live ) there.

Simon wasn't born in Shanghai but now he lives there.
Simon不在上海出生，但现在他住在那里。
一般，某人出生在哪里或者何时，总是用过去式，因为出生总是发生在过去的事情。这句句子后半句有now,表明现在在做什么，由于居住在某处一般是一直做的事，所以用一般现在时比用现在进行时妥帖，这里用了lives。

wasn't
lives

Simon wasn't born in Shanghai but now he lived there.

was 出生当然是过去式啊，难道你一直在出生吗？
lives 是现在的状态，目前一直的状态！

was lives