下列各句中，加点的成语使用正确的一项是（ ）

It’s more than half a century ________ my grandfather joined the Party and became a servant to the people.

Oneof the most important questions they had to consider was _____of public health.

The woman pulled her hat low down ____ her eyes in order not to be recognized by the angry crowds

________，he never seems able to do the work beautifully.