1. And may I make so bold as to ask what institution sponsored your husband's expedition?

2. One student made so bold as to argue with the professor.

3. One student make so bold as to argue with the professor.

4. And may I make so bold as to ask what institutions sponsored your husband's expedition?

5. May I make so bold as to say how much I admire your singing?

6. May I make so bold as to ask what institution sponsored your experiment?