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8.7 go on doing/to do
?
go on to do　做了一件事后，接著做另一件事。
go on doing　 繼續(xù)做原來做的事。
　 After he had finished his maths，he went on to do his physics.
　 做完數學后，他接著去做物理。
　 Go on doing the other exercise after you have finished this one.
　 作完這個練習后，接著做其他的練習











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