她在伦敦证券交易所工作，负责股票交易。

She works at the London ___Stock Exchange, handling stock trades.

伦敦证券交易所每天都有成千上万的股票交易。

Thousands of shares are traded daily at the London ___Stock Exchange.

我哥哥在股票交易所工作，每天处理大量交易。

My brother works at the ___stock exchange, handling numerous trades every day.