It's only inview of our lon

It's only inview of our long friendly business relations______ we extend you this accommodation .
A、what
B、which
C、that
D、why
【正确答案】：C
【题目解析】：本考查强调句型。强调句型为：It＋be的适当形式＋被强调部分＋that＋其他。故本选C项。