Spend the least time on those things that are completely_______, and figure out what you can do practically to make a difference.
______ late, he also forgot his books.
When I called at his home the other day, I found him sitting on an armchair,_____ in his hands.
These teams, which _____twenty experienced workers, are working hard here to ___the time they have lost before.
The chairman thought ________ necessary to invite Professor Smith to speak at the meeting.
All day long, by the side of the road ______, looking at the passing cars and people.