After class the sports ground is alive with students, ______ (一些在打篮球,一些在跑步).
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The boy is said ______(做数学题和计算机一样准确).
They would’t give up trying______(即使他们再次失败).
Mr. Smith, there’ s a Mr. Brown wishing to see you. Can I bring him in______(难道你没看我正忙着呢吗)