[单选题,7.1分] A group of sharks were ________ off the

[单选题,7.1分] A group of sharks were ________ off the coast earlier this month. A.

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[单选题,7.6分] He is an ____ boy, but he is very unsur

[单选题,7.6分] He is an ____ boy, but he is very unsure of himself. A.intellectual

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