The chairman thought _____ necessary to invite Professor Smith to speak at the meeting.
He apologized for ______ to inform me of the change in the plan.
more time, we could do it better.
Helen plays the violin ________, if not better than, Kate.
—You seem to have known Dr. Ken for a long time. —That’s true. ________ he joined our club years ago.
You _______ her in her office last Friday; she’s been out of town for two weeks.