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After resolving the trouble of main power supply, main switch of emergency generator should____, if ...

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in ruins    in danger    in trouble    in sorrow  
danger    surprise    trouble    panic  
testing  inspecting  resolving  making  
A.led in  devoted to  related to  contributed to  
in trouble    in case    in time    in vain  
Unless    Until    After    If  
connecting  resolving  supernettting  routing  
testing  inspecting  resolving  making  
out of ; being  in ; being   on ; to be   in ; to be  
With pleasure    It doesn’t matter    It was no trouble at all    By all means  
remained  still  no longer  much mere  
in trouble    in case    in effect    in vain  
in trouble    in debt    in love    in surprise  
in trouble    in surprise    in love    in debt  
in vain   in case   in time   in trouble  
to look after  having looked after  looking after  look after  
until  not until  not before  not after  
met    shared    taken    made  
solving;in five minutes  to solve;in five-minute   to solve;after five minutes  solving;after five-minutes
  

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