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用情态动词完成句子
You ________ (当时没有必要洗) all those clothes! We have a washing machine to do that sort of thing.
Such a businessman ________ (不可能诚实).He gets his money in a dishonest way.
Look! Tom is too sleepy to work. He ________ (不应该熬夜) watching TV.
－You are doing in a wrong way.
－It ________ (过去常做) this way.
考查情态动词的用法。句意为：你什么意思，只有10张票吗？应该是12张。should表示可能性推测，意为“应该”，符合句意。would表示过去将来；will表示意愿；shall表示一种语气，均不合句意。