___________ is the most secure method of payment.
举一反三
- Which is the most secure way for the importer to make payment?
- The most important factor in determining the payment method is: _____
- 中国大学MOOC: Which is the most secure way for the exporter to arrange payment?
- The most popular payment method of online shopping is paying by___.
- A letter of credit is the most common method of payment in foreign trade.