用所给词的正确形式填空。 1. Einstein has two ______(wife) in his life. 2. His father has been ______ (die) for 5 years. 3. The ______ (die) of this little dog made Kate quite sad. 4. Albert Einstein had one of the great ______ (mind) of the 20th century. 5. Einstein was ______ (bear) in 1879 in Germany.