When did Washington become the first president of the U.S.A.
He became the first president of the U.S.A. （） .

A．He will hold the party on time.
B．He will hold the party ahead of time.
C．He will put off the time.
D．He will cancel the party.

A．The love between cats and dogs.
B．The friendship between cats and dogs.
C．The fight between cats and dogs.
D．The cooperation between cats and dogs.