根据句意和汉语提示，在空白处填入一个适当的单词。51.ManyChinesepeoplehadto

问题详情：

 根据句意和汉语提示，在空白处填入一个适当的单词。

51. Many Chinese people had to____________（取消）their trips in February because of COVID-19.

52. Have you read the report? Those____________（英雄） stories really touched me deeply.

53. The Chinese government has done a lot to control plastic____________（污染）in big cities.

54. It’ll take about two days to finish the project if everything goes____________（顺利地）.

55. It is____________（不礼貌的） to push in before others while waiting for the bus.

【回答】

51. cancel       52. Heroes      53. pollution      54. smoothly      55. impolite

知识点：单词拼写

题型：完成句子