Despite
the growing number of people who purchase plane tickets online, airline
executives are convinced that, just as one-third of bank customers still prefer
human tellers to automatic teller machines, many travelers will still use
travel agents.
A.
growing number of people who purchase plane tickets online, airline executives
are convinced that, just as one-third of bank customers still prefer human
tellers to automatic teller machines, many travelers will
B.
growing number of people who purchase plane tickets online, airline executives
are convinced, just as one-third of bank customers still prefer human tellers
to automatic teller machines, that many travelers would
C.
growing number of people purchasing plane tickets online, airline executives
are convinced, just as one-third of bank customers still prefer human tellers
as compared to automatic teller machines, many travelers will
D.
fact that the number of people purchasing plane tickets online is growing,
airline executives are convinced, just as one-third of bank customers still
prefer human tellers as compared to automatic teller machines, that many
travelers would
是不是convice 后面必须加that？
E.
fact that the number of people who purchase plane tickets online are growing,
airline executives are convinced that, just as one-third of bank customers
still prefer human tellers compared with automatic teller machines, many
travelers would | 
