单项选择题
One of the obligations a bank has to a customer （）
A．is that it can't take instructions from other people B．is that it can avoid complications and problems C．it must pay money to the customer even if he is seriously overdrawn D．it must print the customer's signature
单项选择题 When you have a bank account, you （）
单项选择题 The "pleasant day" to which the author refers was the period when we（）
单项选择题 The passage tells us that （）
