He has been the computer for two hours, chatting with a boy from Australia.
-Why is Tom so worried?-Because he doesn't know _his shop.
By the time he was 12 years old, he_______ threedifferent languages.
Tom studied very hard, and he wanted _______ to his chance to Learn.
-What is the policewoman doing?-She raises her arm as a(n) _______ for us to stop.
The villagers have ______almost 200,000 yuan to build a school since last winter.