Modernsciencehasgivenclearevidence______smokingcanleadtomanydiseases.
A. what
B. which
C. that
D. where
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I’dliketostartmyownbusiness–that’s____I’ddoifIhadthemoney.
A. why
B. when
C. which
D. what
Itisstillunderdiscussion__________theoldbusstationshouldbereplacedwithamodernhotelornot.
A. whether
B. when
C. which
D. where
Itisnotalwayseasyforthepublictosee_______useanewinventioncanbeoftohumanlife.
A. whose
B. what
C. which
D. that
Beforeaproblemcanbesolved,itmustbeobvious______theproblemitselfis.
A. what
B. that
C. which
D. why