2．The boy likes science very much，and he wants to be a s　　　 when he grows up．

　　 根据句意和提示完成单词，使句子正确、句意通顺。

1．The singer sang many songs，i　　　　　 　some English songs．

31．He drove his car 　　　　　fast that he couldn't stop it quickly．

　　 A．so　　 　　　　　　 B．enough　　 　　 C．too 　 D．such

30．　 　　she was out of the room，she turned back and knocked at the teacher’s door again．

　　 A．Until　　 　 B．As soon as 　　 C．Since 　　　 D．Before