What's mean "to verb+ing and to verb"?
for example: to listening and to listen.
You can use 'listening' without 'to' (that's gerund) or 'to listen' (that's infinitive form).
Useful scheme you can follow to use a gerund or an infinitive correctly.
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¿cómo usar las redes sociales a manera de estrategia educativa para enseñar inglés?
England are ahead vs England is ahead
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