Question

3) As I entered the post office, the post master
presented me with a telegram. (Use 'No sooner')​

Answer 1

No sooner had I entered the post office than the post master presented me with a telegram.

Explanation:

• The expression that used here is ‘no sooner…than’ which implies an action that takes place instantly another action.
• No sooner means "one thing than another thing", which mean that the second action that occurs immediately after the first action.
• When no sooner comes at beginning of sentence, we usually use an inverted order of words.
• The structure of "no sooner... than" is literary used. It isn't usually applied while speaking.

To know more:

No sooner said than done. (Use 'as soon as').

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