填空题 Fill in the blanks with words or the expression given below.semesterinstructorspyorganicdelicious(1) (填空题) ____ produced without the use of artificial chemicals(2) (填空题) ____ something that tastes really good(3) (填空题) ____ a person who secretly collects information about activities in another country(4) (填空题) ____ a person who teaches a skill(5) (填空题) ____ a period of time into which a year is divided at university or college