ответить на вопросы! 1.when does a bank ask for guarantees and check the customer's credit? 2.what does the customer guarantee when he/she borrows money? 3.why do people open bank accounts? 4.what is interest? 5.how do people use bank cards and credit cards? 6.how do they use cheque books? 7.what's a cash point like? 8.why are banks useful? what can they do for you? 9.what would happen if there were no banks?