Add spaces: Breakfastisservedeverymorninginthehotel’smainrestaurant,whichspecialisesinPolishandinternationaldishes.

Answer: Breakfast is served every morning in the hotel’s main restaurant, which specialises in Polish and international dishes.

Add spaces: Infectiousdiseases:ChronicFatigueSyndrome(ME/CFS)

Answer: Infectious diseases: Chronic Fatigue Syndrome (ME/CFS)

Add spaces: BeforeyoucanopenaQM4file,you'llneedtofigureoutwhatkindoffiletheQM4fileextensionrefersto.

Answer:
Before you can open a QM4 file, you'll need to figure out what kind of file the QM4 file extension refers to.