. Which do you think tastes _______, Millie, thechicken or the fish?

One ought _______ for what one hasn’t done.

The summer holidays are not far away _________ we can stay at home and read some good books.

下列各句加点的词语运用不恰当的一项是（ ）

Heavy objects and light objects fall at the same speed ________ air holds them back.[ ]