－How much _____ the trousers? －The trousers? Oh, ­____ 230 yuan.

One third of our school _________ covered by trees, while the majority of our students ________ girls. 

. The Olympic Games in the year 2008___ in Beijing of China, which  known to us all.

 Nobody but you _____ able to sing that American song.

_____ of the students who took part in the military training is 450.