While the book on the top shelf , you need to be very careful .
| A．to reach | B．reaching | C．reach | D．are reaching |
15. With the reform of educational system, the teachers_____school I worked before have greatly changed their way of teaching.
| A．in whose | B．whose | C．in which | D．Which |
14. He successfully passed the exam and was _____to his ideal university.
| A．received | B．admitted | C．permitted | D．Moved |
13 ._______, he is famous for writing blogs.
| A． As he is a teacher | B． A teacher as he is |
| C． A teacher although he is | D． teacher as he is |
12. To my surprise, some of my students_____ stay up to study for the coming examination
| A．may | B．must | C．can | D．Should |
11. It is natural that____student doesn't know some answers to____questions raised by their teachers.
| A．a;a | B．a;the | C．the;a | D．the; the |