During his stay in America,my father often communicated with

During his stay in America,my father often communicated with me by email _____ he could save a lot of US dollars.A.so that B.as soon as C.no matter D.such thatHarbin cut the city's water supply last November.It was _____ the Songhua River was heavily polluted/A.because of B.because C.since D.forIn _____ Netherlands there is _____ Children's Restaurant.A./...a B.the...a C./...the D.the...the