It was a good concert and I enjoyed the last classical song ____.
Not until the teacher explained the importance of getting up early ______ we promise to come early.
—How about the party ______ at Mary’s house? —Wonderful! Everyone had a good time.
This is the best way ______ I have thought of ______ the problem.
Particular attention must be paid ______ welfare, especially in the poor area.
At this time tomorrow ______ over the Atlantic.