A．Because the volcano began on 14th November 1963.B．Because they didn’t stop until June 1967—four years later.C．Because they were able to watch the birth of a volcanic island.D．Because they were staying until the volcano grew into an island.
A．Because the volcano began on 14th November 1963.
B．Because they didn’t stop until June 1967—four years later.
C．Because they were able to watch the birth of a volcanic island.
D．Because they were staying until the volcano grew into an island.