It’s said that the screen of an i-phone 6 will be a bit bigger than（）of an i-phone 5s.

单项选择题（） our holiday over, we are back in our classroom for our regular work.

A.As
B.Because
C.With
D.After

单项选择题It must have rained last night,（）?

A.didn’t it
B.needn’t it
C.mustn’t it
D.hasn’t it