Ahmed was left (to dream - dreaming) about his new life as a teacher.
IMO, both are grammatically correct. Using 'dreaming', the emphasis lies on the progressive meaning, i.e. it refers to a present state then. Using 'to + inf.', the emphasis lies on something that would happen (in the near future).
When I first read that question, just like you I thought "to" applied to both "dream" and "dreaming," but then realized -- on reading Ahmed_btm's answer -- that the options were to dream and dreaming.
Thank you, Gustavo, for clarifying that. Ahmed_btm sent me an e-mail pointing out the same thing. I apologize for misreading the answer choices. It had seemed to me that the choices followed "to," whereas "to" was only part of the first answer choice, as if the choices had been "(dreaming -- to dream)" or as if Ahmed Imam Attia's question had been more clearly presented, as follows:
Ahmed was left ______ about his new life as a teacher.
a) to dream b) dreaming
Indeed, when the question is thus understood, both answer choices are correct.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .