A.scientist
B.artist
C.fireman
D.pilot

A.hired
B.employed
C.worked
D.offered

A.worthwhile
B.talented
C.honest
D.skilled

A.composing
B.consisting
C.including
D.contributing

A.area
B.region
C.location
D.place

A.unless
B.whether
C.if
D.as long as

A.Unless
B.Whether
C.Provided that
D.Even if

A.as long as
B.whether
C.even if
D.unless

A.unless
B.whether
C.in case
D.only if

A.As long as
B.Whether
C.Unless
D.Even if