填空题 Fill in the blanks with words or the expression given below.semesterinstructorrain cats and dogsspyceremony(1) (填空题) ____ a formal act which is often performed on a special occasion(2) (填空题) ____ a period of time into which a year is divided at university or college(3) (填空题) ____ a person who secretly collects information about activities in another country(4) (填空题) ____ to rain very heavily(5) (填空题) ____ a person who teaches a skill