13．The first two services are free. the third costs 35．( )A．sinceB．whileC．asD．before——青夏教育精英家教网——

13．The first two services are free，__________the third costs 35．（　　）

12．Whom would you like to ______with you tomorrow？（　　）

11．-Tom didn't pass the exam
-_____？He was studying hard all the time!（　　）

10．I want to he a simultaneous interpreter（同声传译）in the future．What qualities do you think（　　）

9．World No Tobacco Day was celebrated every year on May 31，to remind people worldwide _______ the dangers of smoking．（　　）

8．Everyone present at the party was given a nice little gift with a suitable poem ________ to it．（　　）

7．It was May 10，2013 Ma Yun resigned as CEO of Alibaba and handed over to Jonathan Lu．（　　）

6．In Boston on April 15，2013，a marathon race was going on _______an explosion happened．（　　）

5．_______ you don't have much experience in this field，why don't you ask Professor Wang for advice？（　　）

4．We were going out for a walk ________ it began to rain．（　　）

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