5.　　 卡车正以每小时50英里的速度行驶.

4.　　 盯着外宾看是不礼貌的.

3.　　 医生建议我们定期锻炼,以保持健康.

2.　　 你听起来好想感冒了.

1.　　 总统立即采取措施以阻止争斗.

5．句子翻译

10.　 The lake was frozen _________.

9.　　　 Nancy, if you don’t _______ up we won’t be there until midnight.

8.　　　 Could you possibly _______ me a few minutes? I want to have a talk with you.

7.　　　 It can be hard for even a trained doctor to _______ the symptoms(症状) of lung cancer.