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1. Most men spend most of their lives looking after and waiting upon machines. P. They must be fed well and kept at right temperatures. Q. They might burst with rage and blow up causing ruin. R. If they do not get their meals they refuse to work. S. Machines are very stern masters. 6. So, men need to wait upon machines attentively.

A. SPRQ
B. PQRS
C. QSPR
D. RPQS
Answer» B. PQRS


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