题目内容
Sandra said she would be back _____ this morning.| A．in | B．on | C．at | D．/ |
D解析:
当morning被this，that等指示代词修饰时前面不加介词。
当morning被this，that等指示代词修饰时前面不加介词。
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Sandra said she would be back _____ this morning.| A．in | B．on | C．at | D．/ |
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