Question

Many things have happened ________ we last met . ​

Answer 1

Answer:

Many things have happened when we last met .

Answer 2

Many things have happened since we last met.

Since is used when it is continuously from or starting from the time.

Here, since is the right usage.

• The basic formula for using since is this: since + a particular point in time.
• We frequently employ perfect tenses in sentences involving since. In the main clause of a sentence, we usually utilize the present perfect and past perfect tenses when utilizing since.
• Since is a term used in English to refer to a moment in time.

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