【正确答案】 C

【答案解析】[解析] 画线词lately为副词，意为“最近；近来”。A项lastly意为“最后”，例：He gave many reasons for being late, lastly he said his car had broken down.他先是说了一大堆迟到的理由，最后他说他的车坏了。B项shortly意为“一会儿；不久”，例：She arrived shortly after us.我们刚到不多会儿她就到了。C项recently意为“最近；近来”，例：I"ve only recently begun to learn English.我只是最近才开始学英语的。D项immediately意为“马上；立即”，例：I"ll answer his letter immediately.我会立即给他回信。故选C。