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Hello. I wrote two dialogues. Will you correct them?

No. 1

M: Did you get a ( phone ) call from Saki?

F: No. She's never been late. The bus must be late.

M: I wonder if we should start without her.

F: Well, it can't be helped [ we can't help it ]. She'll soon catch up with us.

No. 2

M: It's freezing cold, isn't it?

F: Yes, it certainly is. What a cold day!

M: Keep yourself warm and get some rest today.

F: Thank you. Take care of yourself not to catch a cold [ prevent a cold ] , too.

                   Thank you. kenta
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F: Well, it can't be helped [ we can't help it ]. She'll soon catch up with us. -- depending on exactly what they are doing, "catch up with us" may or may not be the right expression. It would usually mean that the others will be moving on to a different location (different from the place they were due to meet Saki).

...

F: Thank you. Take care of yourself not to catch a cold [ prevent a cold ] , too.

Everything else looks OK to me.
Comments  
Thank you, Mr Wordy. You always help me a lot!

kenta