Did Saint Augustine use the Julian calendar?
The Julian calendar was in use from 45 BC to the late 16th century AD. Saint Augustine lived from 354 AD to 430 AD.
The answer is yes.

Can a student from Smithtown's Cleary School understand the speech of a French person?
French is a romance language that originated in France. The Cleary School in Smithtown New York is a school for the deaf.
The answer is no.

Is it normal to see a red panda in Shanghai outside of a zoo?
The red panda is endemic to the temperate forests of the Himalayas, and ranges from the foothills of western Nepal to China in the east. The red panda lives between 2,200 and 4,800 m (7,200 and 15,700 ft) altitude, inhabiting areas of moderate temperature between 10 and 25 C (50 and 77 F) with little annual change. Shanghai is located on an alluvial plain, as such the vast majority of its land area is flat, with an average elevation of 4 m (13 ft).
The answer is no.

Can a dolphin keep a diary?
A diary is a written record. Dolphins cannot write.
The answer is no.