Add spaces: Itexpressesqualityandalsoenablessimple,intuitiveoperation.

Answer: It expresses quality and also enables simple, intuitive operation.
Thetwinboyswereseparatedatbirth,andadoptedbydifferentfamilies.

The twin boys were separated at birth, and adopted by different families.
[Q]: [Inthegameyoucanenjoythethrillofflyingthroughtheskies,collectingcoinsonyourwaytoaccumulatepoints.]
[A]: [In the game you can enjoy the thrill of flying through the skies, collecting coins on your way to accumulate points.]
Problem: Add spaces: Numberofstrokesperflash3-5(About15to20percentoflightningflashesarecomposedofasinglestroke).

Spaces added: Number of strokes per flash 3-5 (About 15 to 20 percent of lightning flashes are composed of a single stroke).
This text is missing some spaces, please add them: Dressupthisshygirlforherfunparty.Thisshygirlwillaskdressesaccordingtohergreatmood.Makesuresheislookingfabulousotherwiseshewillbecomeupset.
Dress up this shy girl for her fun party. This shy girl will ask dresses according to her great mood. Make sure she is looking fabulous otherwise she will become upset.
[Q]: [Inthenextarticle,AdventureCyclingPart2,we'lldiscusstrainingforalongbiketripandinPart3,thenecessarycyclingequipmentforadventurecycling.]
[A]:
[In the next article, Adventure Cycling Part 2, we'll discuss training for a long bike trip and in Part 3, the necessary cycling equipment for adventure cycling.]