Please excuse me _______ your letter by mistake.
I hope my teacher will take my recent illness into _____ when judging my examination.
Your essay is quite good: just _____ it _____ with a few illustrations and quotations.
In order to _____ the rising production costs, the subscription rates have been increased.
Although Lucy was slimming, she found cream cakes quite _____.
Thomas Edison considered genius to be _____ one per cent inspiration and ninety-nine percent perspiration.