11.   With much arm waving in front of maps, scholars speculated on the routes that Indo-European speakers might have followed into the Tarim Basin.

12.   Although some scholars had speculated that Mozart composed a comic duet for the opera, none had determined that he played a larger role, Buch said.

13.   Scholars speculate that her father withheld those pages to spare the family embarrassment.

14.   Several legal scholars have speculated the court may decide not to rule in the case.