At the time vs when

[Duc]

Hello,
Please help me, choose one best option A B C or D to complete the senetnce below:
.....each school year all the children were given copies of the school rules
a.at the beginning b.to start with c.immediately d.at first.
The answer is ''a'' but I think it must be ''at the beginning of''.Help me.
and here is the next excercise:
Choose the word or phrase that needs correcting.
Because she forgot her umbrella she was socked to the skin at the time she got to the office .
My teacher say it's ''at the time'' that needs correcting and it must be changed into "when'' but I think they have the same meaning.Am I right?
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Don't see your shade think you are great

[Mister Micawber]

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As it stands, #1 has no correct answer; A needs 'of'.

In #2, your teacher is correct; they have the same meaning, but are used differently. (And the word is 'soaked'.)
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_________________
Native English teacher at Mister Micawber's

[Duc]

Can you tell me what is their difference?
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Don't see your shade think you are great

[Mister Micawber]

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'At the time' is not normally used as a subordinating conjunction as in this sentence.
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Native English teacher at Mister Micawber's

[Yankee]

Another possible way to correct the second sentence would be to change the word 'at' to 'by':

"Because she forgot her umbrella, she was soaked to the skin by the time she got to the office."
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[Nhung]

Can you give me more examples ?

[Mister Micawber]

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Examples of what, nhung?
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Native English teacher at Mister Micawber's