You can’t imagine ______ a little boy eats ____ many apples.

She ____ to her hometown several times.

下列各句中，加点的成语使用恰当的一项是(　　)

All the girls swam in the lake except two， who _____ halfway.

After two weeks of tennis lessons. I think I can finally improve my backhand(反手击球).—Like my mom always says. “ .”