It's almost the end of class so why don't we wrap things up soon?
Class is almost over so maybe we should finish up soon.
どちらも「終了時刻になるのでそろそろ終わりにしませんか?」という言い方です。
1) It's almost the end of class so why don't we wrap things up soon?
2) Class is almost over so maybe we should finish up soon.
*「(クラスの)終了時刻になるので」は
It's almost the end of class
Class is almost over
*「そろそろ終わりにしませんか」は
why don't we wrap things up soon?
why don't we ~? で「〜しませんか?」
wrap up で「終わりにする」
we should finish up soon.
finish up で「終わりにする / 仕上げる」
ご参考になれば幸いです!