He is ________ about his chances of winning a gold medal in the Olympics next year.A.optimisticB.optionalC.outstandingD.obvious

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Heis________abouthischancesofwinningagoldmedalintheOlympicsnextyear.A.optimisticB.optionalC.outstand

He is ________ about his chances of winning a gold medal in the Olympics next year.A.optimisticB.optionalC.outstandingD.obvious
He is ________ about his chances of winning a gold medal in the Olympics next year.
A.optimistic
B.optional
C.outstanding
D.obvious

He is ________ about his chances of winning a gold medal in the Olympics next year.A.optimisticB.optionalC.outstandingD.obvious
a,乐观的