Bonjour !
Clever => Cleverly
Hurried => Hurriedly
Occasional => Occasionally
Sleepy => Sleepily
In the morning, commuters sit sleepily on transports or their way to work and in the evening they run hurriedly dow escalators to catch their train on time. Til workers occasionally write funny or inspirational messages on information, boards. For example before an Ed Sheeran concert at me 02, one employee cleverly used all his song titles to leave a message for concert-goers at the nearest Tube station.
J'espère t'avoir aidé. Bon courage !