r/> 919. Number 13 buses run much more frequently, don't they?13路车跑得更勤，是不是?

920. They are only too delighted to accept the invitation.他们非常乐意接受邀请。

921. We are going to have the final examination next week.我们下周举行期末考试。

922. And now medical care helps to keep people alive longer.现在的医疗保健使得人们活得更长。

923. Do you think you'll be able to go to sleep fight away?你认为你马上就能睡着吗?

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