句型转换.

1. The boy has fun by the sea. (改为同义句)

    The boy _____ _____ by the sea.

2. There are some students in the library. (改为否定句)

    There are _____ _____ students in the library.

3. The hotel is on Green Street. (对划线部分提问)

    _____ _____ the hotel?

4. You can take a bus there. (改为同义句)

    You can go there _____ _____. 

5. Ling ping is on Lin Tao's right. (改为同义句)

    Lin Tao is on Ling Ping's _____.

急性胃炎常见的病因是（）

A.化学因素

B.物理因素

C.微生物感染

D.细菌毒素

E.以上均是