My History Class

As the day wore on,the sun climbed higher and higher,almost imperceptibly,ascending (ascended) to its peak.Transported to (Wrapping in) my wildest dream,I was sapped of strength by the sun's ferocity. ( torridity.) Mr.Alfred,our history teacher,who invariably boasts of his exceptionallly inspired (exceptional sparkling) teaching methods (methodology),is, in reality (as it were),a mundane sort of fellow. His afternoon class may well serve as a perfect antidote to the miserable insomnia during the sacrosanct siesta,albeit he contrived to explain his mesmerizing monotonous sermon on the epic history of the Roman Empire. If it were not for the unexpected burst of (the) bell ring, I would still be totally absorbed (dwell) in my medieval heroic adventure with Lord Baron.
Waking to the reality, somewhat reluctantly, I fumbled in my pocket for my cellphone. Alas! It's not my phone! As I contrived to hunt out the irksome dream-wrecker,the whereabouts of the bell ring suddenly dawned on me, (was clearly coming to light),it turned out to be Emily's cellphone. In her bashfulness, she promptly turned it off (in a minute),even so, it was too late for her to evade the attentions of the watchful (dodge as nothing could escape the omniscient) Mr.Alfred.Exasperated by the vibe-killing ring,he flashed his brown hawk-like (hawk's) eyes through his thick glasses upon the dread-filled (dreaded) Emily as if fixing to (he would) pierce her very soul. Overwhelmed by a feeling of sheepishness, Emily flung herself face downwards on the desk.

Very inspired use of colourful adjectives which works well. Where I think the text could be improved or a better word of phrase would significantly enhance your article, I have suggestd some alternatives. Remember to leave a space after a comma and full stop. 

My History Class

As the day wore on,the sun climbed higher and higher,almost imperceptibly,ascended to its peak.Wrapping in my wildest dream,I was sapped of strength by the sun's torridity.Mr.Alfred,our history teacher,who invariably boasts his exceptional sparkling teaching methodology,is,as it were,a mundane sort of fellow.His afternoon class may well serve as a perfect antidote to the miserable insomnia during the sacrosanct siesta,albeit he contrived to explain his mesmerizing monotonous sermon on the epic history of Roman Empire.If it were not for the unexpected burst of the bell ring,I would still dwell in my medieval heroic adventure with Lord Baron.
Waking to the reality reluctantly,I fumbled in my pocket for my cellphone.Alas!It's not my phone.As I contrived to hunt out the irksome dream-wrecker,the whereabouts of the bell ring was clearly coming to light,it turned out to be Emily's cellphone.In her bashfulness,she turned it off in a minute,even so, it was too late for her to dodge as nothing could escape the omniscient Mr.Alfred.Exasperated by the vibe-killing ring,he flashed his brown hawk's eyes through his thick glasses upon the dreaded Emily as if he would pierce her soul.Overwhelmed by her sheepishness,Emily flung herself face downwards on the desk.

Please remember to leave a space after the use of a comma and a full stop. Also a question mark and exclamation mark.