请教PP语法test 1-89

westlakegz

89. Prehistoric villagers tended to work harder, suffer

   from more diseases, and eat the poorer diet than nomadic hunters did.

答案是D，但我认为是B，tended，因为是并列，后面的动词suffer, eat都用现在时，所以应该改为tend。且比较级前我记得好象也能用the，是在一定范围内，比如两者比较。星期五就考试，记忆中的知识越来越模糊，请各位帮忙看看这题。谢谢！

juniya

tended to suffer