unit11
　　11. _______________(不管观众中的一些人如何使劲地难为他), the comedian always had a quick, sharp reply.
　　12. It is not yet known _______________(机器人是否有一天能拥有象人一样的视力).
　　13. His remarks left me ________________(想知道他的真实目的).
　　14. If you had_____________________ (听从了我的劝告，你就不会陷入麻烦).
　　15. The government was accused ______________(没能实现其改善城市交通状况的承诺).

　　11.【答案】However hard some people in the audience tried to upset him
　　12.【答案】whether/if robots will one day have vision as good as human vision
　　13.【答案】wondering about his real purpose
　　14.【答案】followed my advice, you would not be in trouble now.
　　15.【答案】of failure to fulfill its promise to improve urban traffic conditions/of failing to fulfill its promise to improve urban traffic conditions