---Liu Ming,is that our headmaster Miss Chen over there ?
-- It can’t be her . She _______Xiamen for a meeting.
A. has been to B. has gone to C. has been away
---Lisa ,hurry up !The bus is coming .
--Oh ,no . We______cross the street until the traffic lights turn green .
A. mustn’t B. needn’t C. should
Don’t go to school ______breakfast . It’s a bad habit .
A. after B. with C. without
Lin Dan is ________. I’m ________big fan of him.
A. a ;the B. an ;a C. the ;an
—Here is a dictionary . Whose is it ?
--Oh,it’s ________. Thank you.
A. me B. my C. mine
足够的睡眠时间对学生来讲很重要，然而调查显示，许多学生睡眠不足。请根据图示
内容，简要指出学生睡眠不足的原因并提出建议。
要求：
1．要点齐全，并适当发挥：
2．词数：80词左右（开头已给出，不计入总词数）；
3．文中不得出现真实姓名和学校名称。
It’s important for students to have enough sleeping time．However,
