But doubts persist about how effective the new force will be.

Where scientific doubt persists, it is necessary to make a political choice.

The doubts, over whether he is enough of a politician, persist.

In the end, the group decided not to deal with age, saying doubts persisted for women of all ages.

Doubts persist over this, and they need to be addressed.

Nonetheless, doubts about the intelligence persist among some foreign analysts.

But doubts about whether the accord will be enforced persisted in Congress.

His condition deteriorated throughout 1849, and doubts persisted in her mind about their union.

It is considered an important manuscript, but some doubts persist about its authenticity.

But doubts about the economy's strength will persist, and another negative report could jolt the market again.