I didn’t quite follow him because he explained the theory _____that is too abstract for me.
There ____ a temple on the side of the mountain, didn't there?
Can't we just live today, ____ the worries of tomorrow or the regrets of the rest?
Try to put the candidate ____ by being friendly and informal.
—Why can your neighbor know so much about London?—He ____ have been there before.
The new teacher made a good ____ on the students by her rich knowledge and humorous talk.