Sincetherearemanyexcellentathletescompetingagainsteachotherinthegame，itisuncertainhewillsucceedinwinningthemedal．（）A.thatB.whatC.whetherD.where
Since there are many excellent athletes competing against each other in the game，it isuncertain __________ he will succeed in winning the medal．（ ）
A. that
B. what
C. whether
D. where
Since there are many excellent athletes competing against each other in the game，it isuncertain __________ he will succeed in winning the medal．（ ）
Since there are many excellent athletes competing against each other in the game，it isuncertain __________ he will succeed in winning the medal．（ ）A. that
B. what
C. whether
D. where
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