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英语语法Fill in the blanks using the correct form of the modal v

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英语语法
Fill in the blanks using the correct form of the modal verbs can,could,must,may/might,have to,need,be able to,should,or had better.
1.My Galaxy Note II had disappeared.Who_____(take) it away?
2.Robert______(not speak)any Dutch when he moved to Amsterdam last year,but he's almost fluent now.
1.could have taken表推测可能,题目里要求用情态动词,如没要求,用took也行;2.couldn't speak或wasn't able to speak否定句中等同