problem

pass one's time in, employ one's time in, spend one's time in; employ oneself in, employ oneself upon; occupy oneself with, concern oneself with; make it one's business; undertake; enter a profession; betake oneself to, turn one's hand to; have to do with (do)., drive a trade; carry on a trade, do a trade, transact a trade, carry on business, do business, transact business; keep a shop; ply one's task, ply one's trade; labor in one's vocation; pursue the even tenor of one's way; attend to business, attend to one's work., officiate, serve, act; act one's part, play one's part; do duty; serve the office, discharge the office, perform the office, perform the duties, perform the functions of; hold an office, fill an office, fill a place, fill a situation; hold a portfolio., be about, be doing, be engaged in, be employed in, be occupied with, be at work on; have one's hands in, have in hand; have on one's hands, have on one's shoulders; bear the burden; have one's hands full (activity) [more]., be in the hands of, be on the stocks, be on the anvil; pass through one's hands.

be imperfect; have a defect; lie under a disadvantage; spring a leak., not pass muster, barely pass muster; fall short.

float in the mind , pass in the mind [more].