单选题 There is no hurry. You can take your time ______ those exercises.
A. doing B. to do C. done D. to be doing

【正确答案】 A
【答案解析】句型结构。take time to do sth．相当于spend time doing sth.，意为“花时间做某事”；take one's time doing sth．意为“不着急，慢慢做”。因此A更合题意。