Here are the completed sentences based on your instructions:
Much to our surprise, she was going on a world cruise.
This is as far as I'm going till I've had something to eat.
She felt shamefaced at having made such a stupid mistake.
On no account must you forget to lock the drawer.
However short he is on money, he always buys his mum a birthday present.
All of a sudden, a solution to the problem occurred to Alison.
He decided he would rather repair the thing himself than take it back to the shop.
The violent criticism was quite unjustified of the headmaster.
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