? Look at questions 1-5.
? In each question, which sentence is correct?
? For each question, mark one letter (A, B or C) on your Answer Sheet.
If at anytime you wish to cancel your subscription, notify us in writing.If you want to cancel the subscription,
A.you should send them a written notice.
B.you can only make it at a specified period.
C.you can contact them by phone.
请帮忙给出正确答案和分析,谢谢!