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Dovent Posted 8 years ago
Grammar

Adjective clauses

Most outpatients assess the quality of the treatment on the speed ............. they are dealt with.

a) when b) where c) at which

The answer is " c".

Why the answer contain "at" ?

Is not it possible to use without "at"?

Or can we use " on which" format ? What is the difference?

Thank you for your help.

  

Top answer

dovent Why does the answer contain "at "? It's because the expression is " at ... speed".

— CalifJim

  • dovent Why does the answer contain "at "?
  • It's because the expression is " at ...
  • speed".
  • ( At what speed was the taxi traveling?
  • ) The outpatients are dealt with at a certain speed.
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1 Answers
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doventWhy does the answer contain "at"?

It's because the expression is "at ... speed". (At what speed was the taxi traveling?)

The outpatients are dealt with at a certain speed.
The speed at which the outpatients are dealt with

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