May 12, 2008 , a terrible earthquake happened in Wenchuan . Lots of buildings __________ , and many students lost their lives .

_____ do the students do after-school activities every day ? For more than one hour.[ ]

Would your brother go for a picnic this Sunday?—If I don’t go, _______________.

He wants to be a writer so he is going to _______ writing stories

Joe has been studying Chinese for three months．but he can ________ understand people when they speak Chinese．