1。------May i keep your book a little longer?

--------of course,_________.

空格中填take your time,还是go ahead，如何分析

2.the farmers wondered if vegetables can bring in as much as crops.

crops用的复数形式，为什么用as much as ?

thanks for your help!

1. take your time.

正如一楼所说，"go ahead" 在这里的意思跟前面的"of course"就重复了。

2.这里想要强调的是crops和vegetables的产量，是不可数的。因此用as much as.

1. Take your time ( because of course and go ahead pretty much means the same)

2. can't help you there, it just make sense to use " as much as " there

crop是可数名词，

名次使用中如果没有冠词修饰，就应该是复数形式，

这里就是采用的复数形式。