never know what was on his mind at the time,nor will _______

What attracted you to our university— You have a great basketball team and I can _______for it.

Mary，how did your Math test go–I had thought I _________，but in fact I came in the top 10 in my class．

The experiment show that proper amount of exercise, if ________ regularly, can improve our health [ ]

58 It is said that a collection ofpaintings by David is _____ exhibition at the Museum