58．My daughter has a piano l_________ this afternoon．

57．Do you think d_________ are not important in a friendship?

56．Every summer I have a long v_________ and I can get a good rest．

55．My mother often_________ (担心)about my sister．

54．The doctor_________ (相信)we need a balance of yin and yang．

53．My cousin likes surfing the _________．(网上冲浪)

52．It’s _________ (必要)for US to learn English well．

51．We plan_________ (参观)the city museum．