36. ______ has helped to save the drowninggirl is worth praising.

Why ____ to go abroad to study when thereare so many good universities at home

What do you _________ Ice Age IV —- It’s very interesting.

下列各句中，加点熟语使用不正确的一项是（ ）（3分）

feather falls slower than a stone only because the air holds the feather back more than it ______ the stone.