解答

✨ 最佳解答 ✨

(1) Saki's mother is very proud of [having been](完了形の動名詞:過去を表す) a math teacher at a high school.
(2) Saki's mother started teaching math to neighborhood children on weekends since last year.

参考にしてください。

ありがとうございます。

taka

You're welcome!😊
訂正:(2) since last year → last year ※started(過去形)なのでsinceは不要

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