The differ from us ( ) they are not willing to improve the w
1个回答

c in that 表示“因为”

前半句They differ from us 和后半句they are not willing to improve the working conditions of the workers 都是完整的句子,需要连词;而其他选项均可以充当句子中的某个成分,换句话说,其他选项均可用在句子结构不完整的情况下.