Which sentences are O (opening) and which are C (closing) remarks? Opening remarks Closing remarks I am writing to thank you for... Thank you again for your superb present. How are you? I've just opened the present you sent me and ... I thought I'd drop you a line to say thanks for the present you sent me. Well, that's all my news. My parents send their regards and have asked me to tell you that... ... you will always be welcome guests whenever you get the chance to visit us. I would love to hear from you whenever you have time to write.

Задание

Which sentences are O \(opening\) and which are C \(closing\) remarks?