日本語をクリックすると英文が表示されます。まずは自分で英語にしてから答え合わせを。
I'll get in touch once I have time.
I'll get in touch once I'm done.
I'll get in touch once it's set.
I'll get in touch once I know more.
I'll get in touch once I've checked.
I made a booking just in case.
Let me know when you find out.
I made a copy just in case.
Let me know when it arrives.
I backed it up just in case.
Let me know when you're ready.
I took a note just in case.