He_______have been here two hours ago, but he hasn’t_______by now.
Anyway, that evening, ______ I’ll tell you more about later, I ended up staying at Rachel’s place.
–Is there an express to Beijing tonight? -- There ______be , but you’d better call the booking office to make sure.’
–Do you think that the 16th Asian Games were a success? --Yes, _______!It couldn’t be better.
Chinese President Hu Jintao called for an immediate cease-fire in Libya ______ an even worse humanitarian crisis in the country at the BRICS Summit in Hainan province.
________scores of times, but Derek still couldn’t understand how to use past participle in a concrete situation.