She hadn’t anything for breakfast this morning.哪里错了

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• She hadn’t anything for breakfast this morning.哪里错了
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• (1)Look at the signs!You____ paly football here.(2)we _____ have breakfast in the morning.(3)The wind is biowing strongly.we ____ fly our kites now.(4)Children ____ play near fires.(5)You___ eat too much sweet food.(6)She is not feeling well.She go to see the doctor.用 must/mustn't can/can't should/shouldn't 填空(6)She is not feeling well.She go to see the doctor.写错了是(6)She is not feeling well.She ______ go to see the doctor.
• he couldn't see_ Asometing unusual Banything unusual Cunusual anything Dunusual something
• 两相干波源S1与S2相距3λ/4,λ为波长．设两波在S1,S2连线上传播时,它们的振幅都是A,并且不随距离变化．已知该直线上在S1左侧各点的合成波强度为其中一个波强度的2倍,则两波源应满足的位相条件是_____