缺词填空（每空一词，每空1分，计10分）

American schools begin in September a_____小题1:______ a long summer holiday. There are two terms(学期) in a school year: the f________小题2:______ term is from September to J__小题3:________ , and the second is from February to June. Most American children begin to go to school when they are five years old. Most students are seventeen or eighteen years old when they f______小题4:______  high school(中学). High school students have only four or five s_____小题5:______ to learn each term. They u_____小题6:____  go to the same classes every day and they have to do their h_____小题7:_______  for every class. After high school, many students go to college(大学). They can go to a small one or a l ____小题8:_______ one. Students have to s______小题9:________ a lot of money on their studies. So many college students w_____小题10:______  after class to make money.

---- Mary looks sad. What _________ her ?

-----She failed in the maths exam.

A. happened to  B. happened   C. was happened   D were happened