given in the brackets to complete these sentences.
(rehearse) the scene five times
1. The actors
8 o'clock.
1
2. They
by noon
3. She
4. They
hours by lunch time.
(visit) the entire state by the
5. The sales team
end of this month.
(run) the shop for ten years by the end of
6. He
January next year.
7. Firefighters
hours by 5 p.m.
(try) to control the fire for six
E. Use the future perfect or the future perfect continuous form of the verbs
(keep) the children amused for two ho
-(work) here for eight hours by 10 pm
(attempt) to find the lost ring for three
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A reversible engine converts one-sixth of the heat input into work. When the temperature of the sink is reduced by 620 C, the efficiency of the engine is doubled. The temperatures of the source and sink are :
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