6. Since nobody gave him any help, he have done the research on his own.
(A). can
(B). must
(C). would
(D). need

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詳解 (共 1 筆)

#2853806

(A) can =>能去做
(B) must =>必須去做
(C) would =>將會去做
(D) need =>需要去做

從題目上來看:沒人能給他幫助，而且要他自己一個人完成。顯然不管有沒有這個能力，他都「必須」去做。選(B) 

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