______ , it is also the most effective and secure way available. (admit)
举一反三
- Which is the most secure way for the importer to make payment?
- Which is the most effective way to maintain a conversation?
- What is the most effective way to check your speed?
- 中国大学MOOC: Which is the most secure way for the exporter to arrange payment?
- In your opinion, what is the most effective way to learn English?