Using a relative clause:Lee’ restaurant on Hong Kong Street used

Using a relative clause:
Lee’ restaurant on Hong Kong Street used to be poorly run. Lee’ restaurant on Hong Kong Street is now a successful business.
【正确答案】：Lee’ restaurant on Hong Kong Street, which used to be poorly run, is now a successful business.
【题目解析】：先行词为指物的Lee’ restaurant，在句中做主语，故用which。