单选题 If you______in taking this annoying attitude, we'll have to ask you to leave.
【正确答案】 A
【答案解析】解析：如果你坚持采取这种恼人的态度，我们会要求你离开。persist坚持，注意与in搭配；insist坚持，注意与on搭配；resist抵抗，抵制；assist协助。