We listened to the teacher carefully
We listened carefully to the teacher
We carefully listened to the teacher
私たちは、その先生の言うことを注意深く聞きました。

Let's listen to the teacher carefully
Let's listen carefully to the teacher
Let's carefully listen to the teacher
先生の話を注意して聞きましょう。

carefullyはどこの場所においてもいいのでしょうか?