1.   Two questions need to be addressed.

2.   Two questions need to be asked.

3.   Given that the involvement of genetic factors is no longer in dispute, two questions need to be answered.

4.   As with any serious combat incident, however, tough questions need to be asked about this episode and appropriate adjustments made.

5.   All these questions need to be addressed, Stempler and others say.

6.   But hard questions needed to be asked about what the participation of Bill Gates and Paul Allen will bring to the new Dreamworks studio.

7.   But in both cases, the question needs to be asked.

8.   But on Monday, some critics of the drug said that it was premature to celebrate, because crucial questions still needed to be answered.

9.   But parents are still worried, and researchers acknowledge the question needs further study.

10.   But still other questions need to be asked about healthful habits like exercise, diet and stress.