To our surprise, Mary didn’t feel a bit nervous though it’s the first time she _____ in public

对下列两组句子中画线词的用法理解正确的一项是（ ）①三顾频烦天下计 君臣相顾尽沾衣 ②两朝开济老臣心 夕济兮西澨

There was a________look on his face when he met with the________problem. [ ]

______ do you exercise —Once a week.

The money they raised from the concert is____ it was expected.