PQRS sentence arrangement — Reorder the fragments (P, Q, R, S) to form a clear, grammatically correct sentence stating that work is the one thing that is necessary to keep the world going, and without it we should all die (fully solved for competitive English exam practice).

Given data

• Intro (given): ‘‘work is the one thing …’’
• P: ‘‘and without it’’
• Q: ‘‘that is necessary’’
• R: ‘‘to keep the world going’’
• S: ‘‘we should all die’’

Concept/Approach
Complete the head clause with a relative clause (‘‘that is necessary’’) and its complement (purpose ‘‘to keep the world going’’). Then add the coordinated result clause (‘‘and without it we should all die’’).

Step-by-step construction
Start with Q to attach the defining relative clause: ‘‘… that is necessary …’’Add R to complete meaning: ‘‘… to keep the world going …’’Bring in P for coordination: ‘‘… and without it …’’Finish with S: ‘‘… we should all die.’’Final sentence: ‘‘Work is the one thing that is necessary to keep the world going, and without it we should all die.’’

Verification
Syntactic flow is Head → Relative (Q+R) → Coordinated clause (P+S). No dangling or misplaced modifier remains.

Common pitfalls
Do not place ‘‘and without it’’ (P) before completing the ‘‘that …’’ clause; it breaks the head–relative linkage.

Final Answer
QRPS