Difference between I used to and I was used to?

[Mark O.]

English Grammar Error, Intermediate level

ESL/EFL Test #19 "Adverbs and Gerunds", question 5

When I was living in the country, I was used to get up very early to catch the train into the city.

(a) was living
(b) I was used
(c) catch

English Grammar Error, Intermediate level

ESL/EFL Test #19 "Adverbs and Gerunds", answer 5

When I was living in the country, I used to get up very early to catch the train into the city.

Correct entry: I used
The error was: (b) I was used
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which ones is wrong it doesn't make any sense.

Mark O.

[Mister Micawber]

.
'used to [do]' (VERB) = to formerly do. I used to get up early but I don't do so nowadays.
be 'used to' (ADJ) = have the habit of. I am used to getting up early every morning.
.
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Native English teacher at Mister Micawber's

[Bangshws]

I was: is used to indicate a fact.
For example: I was a primary school teacher.

I was used to: If you are used to something, you are accustomed to it

a very good example about the difference between them can be found here mate! :)

[Mister Micawber]

However, note that it does not fit into the structure of the test sentence. It would have to read "I was used to getting up very early...."
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Native English teacher at Mister Micawber's