根据下面的问句，选择适当的答句
Who’s that girl behind the tree?
How often do you write a letter?
Which sweater do you like?
I’m sorry I’m late.
What day is it today?

A．It doesn’t matter. Come in, please.

B．I can t decide.

C．Thursday.

D．About once a month.

E. Oh, that’s my sister, Kate.