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。
Please call me back.
I heard the voicemail.
I'll call you back.
There's a voicemail.
I'll call right back.
Hello?
Please call back.
Hello, can you hear?
I'll call back later.
The line is busy.
I can't answer now.
I'll end the call.