Different topic
1. In case you need to talk to someone via radio (walkie talkie) what you need to say in the beginning of the phrase to draw your colleague's attention to the radio speaker? Any differences among English-speaking contries (UK, US, Australia etc.)?
2. Can you say "I need to catch up on some sleep" in case you need no sleep more to feel better?
3. Can you say "Did you have good dreams" after a sleep?
4. in case you are greeted with "How are you" can you came back with the same phrase?

Question

Answer

1) I would almost always just open with the person's name or callsign. (Jeff, are you there?). In some situations a speaker might begin with 'calling'.

2) That is fine. I would consider dropping the 'some', and just saying "I need to catch up on sleep", or "I need to catch up on my sleep".

3) That is fine. "Pleasant" is another words that's used quite often when describing someone's dreams in the past tense.

4) Yes, although not without answering the question first. "I'm good, how are you?", or "Fine, how are you?" are common. Also common is, for example: "I'm good, and you?".

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