多选题 When elected director general of the World Health Organization, Dr Margaret Chan promised to work ______, to be unflagging in her efforts to produce results.
【正确答案】 C、D
【答案解析】[解析] ● 逗号说明前后同义重复。
● 空格与unflagging(不松懈的)同义重复。
● vaingloriously自负地，fecklessly粗心地，indefatigably不松懈地，untiringly不松懈地，circumspectly周到地，ineffectually无用地。答案选CD。