to-ing and fro-ing
[ˌtu:ɪŋənˈfrəʊɪŋ] ( pl to-ings and fro-ings )noun
(uncountable noun) idas fpl y venidas
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ENGLISHComplétez la séquence avec la proposition qui convient.
… Abigail travels all around the world, she sends postcards.