ANSWER:−

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Solution

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\rm \bull \: \underline{ \underline{Given \: sentence : }}∙

Givensentence:

➪ I read an old letter. It brought back memories of my family

\rm \bull \: \underline{ \underline{What \: we \: have \: to \: do \: in \: this : }}∙

Whatwehavetodointhis:

➪Join the given sentence without using 'and' or 'so' .

\rm \bull \: \underline{ \underline{Solution:}}∙

Solution:

➪ I read an old letter which brought back memories of my family

Or

➪ I read an old letter that brought back memories of my family.

\rm \bull \: \underline{ \underline{Explanation:}}∙

Explanation:

The 'which' is most common subordinate conjunctions used in the English language in order to connect two sentences together

Subordinating conjunctions sentences are joined or connected by Subordinating conjunction and relative pronoun and Relative Adjectives

The ' which ' is most common and most recognised relative pronouns .

marks the end of British rule in 1947 and the establishment of a free and independent Indian nation.