orry to say this, but the room here is very dirty.—______. I will ask someone to clean it right way.

________ great fun I have _______ Frisbee（飞盘）with my dog! He can always catch it quickly!

The topic, we devoted a full discussion, is to be presented to our teacher at class.

He ran as fast as he could ______________ the people in trouble.

(2014·山东省实验中学一模)You________get an all­expense­paid vacation to Australia if you can answer all the questions.