[题目]Most American children go to state schools, but the private schools be very good.A. must B. canC. should D. ought to 题目和参考答案——青夏教育精英家教网—

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【题目】Most American children go to state schools, but the private schools __________ be very good.

A. must B. can

C. should D. ought to

【答案】B

【解析】句意：大多数美国儿童上公立学校,但私立学校可能很好。must必须;肯定;can表示客观可能性;should和ought to同义,意为“应该”

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