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

We all       goodbye to my father as he was on the train to Beijing．

In Disneyland every year, some 800,000 plants are replaced because Disneyland refused to _______ signs asking his “guests” not to step on them.

 The school, more than 90 percent of whose graduates are usually admitted into key universities, enjoys an excellent _______.

Americans eat_____vegetables per person today as they did in 1910.