按照要求改写下列句子。 (5分.每题1分):
（1）Go straight on ! (改为否定句)
            straight on!
（2）My favorite food is hot dog. (变同义句)
I ______ hot dog ______.
（3）I will stay in Shanghai for two weeks. (就划线部分提问)
______ ______ will you stay in Shanghai?
（4）There are four books on the table. (就划线部分提问)
_____ _____ books _____ _____ on the table? 
（5）They read English every day . (就划线部分提问)
______ ______ do they read English?