选择方框中正确的词或词组填空

1 because of
解析:后面接词组,为介词短语.
2 because
解析:后面接句子,为连词.
3 so that
解析：如此.以至于.
4 in order to
解析：翻译为：为了...,In order to do sth.
5 so that
6 such that
解析；such a/an+形容词+名词单数