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____ be Alice39。s. She wears earrings sometimes. 3. Whose jeans are these? I found them on the chair in the living room. They _______ be mine. I put all my jeans on my bed. 4. Is this Jim39。s football? Yes, it _______ be his. There is his name on it. 5. I just found a video game in the kitchen. Whose is this? Oh, that ________ be Tom39。s. He39。s been looking for it for two hours. must could can39。t must could The little dog must be hungry. The girl must be ill. She must have a cold. The woman must have a toothache. Zou Kun Whose magazine is this? It must be Zou Kun’s. =It must belong to Zou Kun. belong to 屬于 … Whose book is this ? It______ be Mary’s. must =It must belong to Mary. (屬于 ) must用在肯定句中表 示較有把握的推測, 意為“一定”。 (100