题目内容：

B) 根据句子意思，用括号中所给单词的适当形式填空。

1.Some pictures were__________ (hang) in the hall.

2.The traffic is a big problem in the__________ (east) part of the city.

3.The__________ (serve) in that restaurant was very poor.

4.He has some__________ (Japan) friends.

5.He studies at a college of science and__________ (technical).