Having decided to rent a flat,she( )looking for the davertisementsset out B set up C set about D set down

Having decided to rent a flat,she( )looking for the davertisementsset out B set up C set about D set down
Having decided to rent a flat,she( )looking for the davertisements
set out B set up C set about D set down

Having decided to rent a flat,she( )looking for the davertisementsset out B set up C set about D set down
set about doing开始着手去做什么事
因此选C

C 开始着手
已经决定租房子了，她开始着手找广告

B