This passage had many new words and the students could not _______ what the writer meant

I like getting up very early in summer. The morning air is so good ________.[ ]

________ once a year by fire officials, whether a school is large or small, is a regulation that must be carried out in this country.

Mr. Li, who is said to have moved to Beijing, _____ at No. 4 Middle School in our city for thirty years.

_______ in the story book that he had bought not long before,the boy didn’t notice his mothergo into his room[ ]