He participated in conversation, but whenever it lagged, he watched her questioningly.
We've all participated in naming the animals in the past.
In the Italian Renaissance, only a thin veneer of society's elites participated in the creation or ownership of the frescos, music, statues, and paintings; most were only passive observers.
He participated in the conclave which followed the death of Innocent VIII.
In 1848, largely on account of his personal attachment to Martin Van Buren, he participated in the revolt of the "Barnburner" or free-soil faction of the New York Democrats, and in 1855 was the candidate of the "softshell," or anti-slavery, faction for attorney-general of the state.