1.   For some questionable assumptions are being made.

2.   However, she makes two highly questionable assumptions that must be challenged.

3.   However, this is a rather questionable assumption.

4.   This argument seems to me to be based on several questionable assumptions.

5.   Tumin regards this as a very questionable assumption.

6.   What do you think is the most sensible assumption and the most questionable assumption of conservatism?

7.   This argument of course relies on the questionable assumption that eye movements adequately describe the distribution of attention to a stimulus.

8.   But an examination of promises being made by Bush and Gore seems to show that both are relying on questionable assumptions.

9.   It is not, however, consistent with our controlling precedents, and it requires some questionable assumptions about the nature of contract law.