Work started on the church in 1209 and progressed slowly.
They progressed slowly, making their first 50 in the 23rd over.
The subject's development progressed slowly until the subject became a major, then department and finally a separate school.
Construction began in the winter of 1862-1863, but progressed slowly.
Even after the reduction in scale the work progressed slowly.
The disease is a slowly progressing one, as you can imagine something that's taken 11 years.
But many students progress slowly because they must take remedial courses.
The development of this area progressed slowly and was not fully completed until the mid-1950s.
You can then slowly progress to the end of a couch or a sturdy chair, and finally to the floor.
Even when composition had been decided upon and painting started, work progressed slowly.