"Do you know the fox-trot ?" "A little." "The twinkle step ?" "Not at all." "I might teach you that," Joan suggested.
"Oh, do! Teach it me now! Then we'll dance it in the passage." "But every one will be dancing it in the ball-room," Joan objected.
"That's why," said Harry Luttrell, and they both laughed.
Joan looked towards the gramophone in the corner of the room.

She was tempted, but she must have that letter written first.

She would dance with Harry Luttrell with an uneasy mind unless that letter were written and posted first.
"Will you put a record ready on the gramophone, whilst I write a note," she suggested.

"Then I'll teach you.

It's quite a short note." Joan sat in her turn at the writing table.