单选题 ______ has recently been done to improve the conditions of elementary schools, a large number of children are unable to go to school.
A. In spite of what B. What C. Despite D. Though

【正确答案】 A
【答案解析】不论我们在改善小学教育状况方面做了什么，仍然有大量的孩子无法上学。
[答题点拨] 横线后半句缺少主语，且在整个句子中作状语成分。