1.   A few astronomers have raised doubts about this extrapolation from ordinary galaxies to all extragalactic objects.

2.   Her report has raised doubts about the likely success of this project.

3.   His handling of the matter has raised doubts about his competence.

4.   Our job, after all, is merely to raise a doubt.

5.   The incident raises doubts about the safety of nuclear power.

6.   The new evidence raised doubts in the minds of jury members.

7.   The way the research was carried out raises doubts about the results.

8.   They are Marvellously done, and they have caused a stir of approval in this country, while also raising doubts.

9.   This raises doubts about some of the signposts the Fed used to rely on.