找出与所列单词意义相反的单词.

1 virtue
a.spider
b.lack
c.leisure
d.vice

2 crude
a.weak
b.delicate
c.safe
d.moist

3 foul
a.dirty
b.clean
c.dry
d.damp

4 obey
a.reduce
b.interrupt
c.command
d.yield

5 surplus
a.shortage
b.leisure
c.evil
d.wage

答案：d b b c a