填空题


【参考答案】

in lab→in the lab
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few→couple
单项选择题
A．The police caught the thief within three months.B．The police had still not managed to catch the thief three weeks.C．The police caught the thief three weeks later.
A．The police caught the thief within three months.
B．The police had still not managed to catch the thief three weeks.
C．The police caught the thief three weeks later.
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