A.butB.whileC.asD.although
A. but
B. while
C. as
D. although
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A.proneB.subjectC.akinD.liable
A. prone
B. subject
C. akin
D. liable
A.apparentB.confusingC.plausibleD.promising
A. apparent
B. confusing
C. plausible
D. promising
A.floatedB.bubbledC.driftedD.submerged
A. floated
B. bubbled
C. drifted
D. submerged
A.unlimitedB.specificC.definiteD.finite
A. unlimited
B. specific
C. definite
D. finite