因为有so,所以这里应该是两个句子,而不是从句
because后面是不可以跟but,用了as,也不需要用到so了,因为as已经引出原因,不用再这样重复了
如果将句子改成:____ a proper partner,he had to operate the mine by himself.
就可以选择c了
因为有so,所以这里应该是两个句子,而不是从句
because后面是不可以跟but,用了as,也不需要用到so了,因为as已经引出原因,不用再这样重复了
如果将句子改成:____ a proper partner,he had to operate the mine by himself.
就可以选择c了