The expo will be held in Shanghai, _____a lot of advanced technology will be shown for the first time.
I haven't finished my composition. I ________ for two hours and a half.
Last month I was lucky enough to have a chance to make a trip into _____ spacewith my friend Li Yan ping, _____ astronomer.
Our class ______ forty-five students, in other words, forty-five students ______ our class.
The rare animals would die _______ if men were allowed to shoot as many as they wished.
The prize will go to the writer ________ story shows the most imagination.