△ABC≌△DEF，且△ABC的周长为100 cm，A、B分别与D、E对应，且AB =35 cm，DF= 30 cm，则EF的长为     [ ]

A. 35 cm    

B.30 cm    

C.45 cm    

D.55 cm

Why don't you bring _____ to your teacher's attention that you are eager to have the chance? [ ]

A. it

B. that

C. this

D. 不填