选出最符合句意的一个单词.
1 In his attempt to escape, the prisoner was (   ) by a watchful guard.
a.amused   b.frustrated   c.wrecked   d.plucked   

2 Government makes laws and the police (   ) them.
a.enforce   b.stretch   c.dispose   d.chase   

3 The city (   ) the road to the next town
a.yielded   b.guarded   c.disposed   d.extended
   
4 A (   ) friend keens his promises.
a.solemn   b.splendid   c.faithful   d.lame   

5 The sick man's heartbeat was (   ).
a.irregular   b.raw   c.spare   d.tiny