Question

my sister said to me. "let us complete our H.W."​

Answer 1

$\begin{gathered}\large {\boxed{\sf{\mid{\overline {\underline {\star ANSWER ::}}}\mid}}}\end{gathered}$

Reported Speech :-

QUESTION : My sister said to me. "let us complete our H.W."

ANSWER : My sister suggested/proposed that we should complete our homework.

Explanation :-

Whenever the speaker requests someone using the word let,

• The Reporting Verb will be requested.
• The relevant Personal Pronoun will be used, as given in the quotes.
• Might be allowed to will be the use of the Verb.

@SweetestBitter