请教2003-8-11

rabbit_little

2003-8-11

In jazz misic, a riff is a simple melodic figure, ________and repeated several times.

A, usually one or two measures lasted

B, usually lasting one or two measures

以上两个答案从语法上看好象都对，应该选哪个呢？这句话怎么翻译？

ankeen

A，and 并列

Springer

B,last不能用被动