I’m blessed______ a happy childhood, ______ most people would like to have.

下列加横线词语的解释全都正确的一项是（ ）

The stone on the river bank rolled underher feet; she was _____into the river，and she called out for help

Will you come to the dinner party—I won’t come unless Jenny ___________。

Only ______according to the directions canthe medicine be quite effective.