—What has ________ done since 1989?. —It has built many schools for poor children .

 —Mum, 1 am hungry. May 1 have some______?—Of course. But don't eat too much.

 He decided not to tell his parents that he was going home because he wanted to give them a _______.

 –What do you think of this ________?–I love it. I learned a lot about Steve Jobs after reading it.

The two cities have reached an        to develop science and technology.