—________do you surf the Internet?

— Once a week.

A．How long                             B．How often

C．How much                             D．How far

--- ________ do you read English?

--- Every morning.

[　　]

--__________ do you write to your mother?

--Once a month.

A．How long          B．How often          C．How far                    D．How much

— ______ is it from your home to your school?   —Two kilometers.

A．How much         B．How often         C．How far           D．How long