C：
the usage is incorrect -- in fact, i don't think you can say "verbING is done..." for any verb.
the other problem with that answer choice is that "large quantities" doesn't seem to apply to the spices themselves, because the spices are no longer the subject of that construction.

1）Sequences of actions are normally in parallel. If two description happened at the same time, they shouldn't be parallel. Instead, use "comma + ing" to modify.
2）", then ing…" is NOT right, because the action of "comma + ing" is in the same time-frame as the main verb.

一个很简单但又容易错的题，GMAT的数学，细心再细心哈。-25，-24，-23，-22.。。。。22，23，（24是没有的）。

为什么这题考点不在主被动呀，B选项中使用被动形式就省略了动作合理发出者呀？

after falling还是看成一个简单的状语比较好

从N的条件可知分数可能的结果是5，4，3，2，1， 共15分。三个队共有15分，没有一个队超过6分，则任两个队的分不会超过12分，得分最少的队最少为15-12=3

总成本等于数量✖️单价，单价虽然增加，但是数量减少，a所提到的所有issue 发行的成本可能还是不变的。而每本杂志价格没有变，总成本也不变。因此a的利润没变。

哎 太难想到了

360+6%(T-1000)=8%T
2%T=300
T=15000

读句子，E有断句，导致意思不容易被理解。

看题时最绕的是名字。。。看半天要分清楚两个地方，还要分清楚两个地方的酒店。。。

them

两句话有逻辑关系不能用独立主格

at any other time；比较对象是车，不是时段；

(A) one quarter加后面的部分应该是一个可数项，而less修饰不可数名词，且用less的话，前面要用there is，故用less错误；that many的表达unidiomatic。
(B) Correcet；补全省略即there are fewer than one-quarter as many (as there were in the late 1950s)； fewer修饰可数名词正确；
(C) amount修饰不可数名词，不能用来修饰4,000（drive-ins）这个可数的量。
(D) the number指代不清；the amount指代不清，只能修饰不可数名词；the number is less没有问题，less和smaller都可以修饰数字。
(E) it没有指代对象，that amount指代4,000 drive-ins错。

prohibit不能加不定式

in the case of "prohibit", you can also just prohibit an activity (noun or gerund).
period.
i can prohibit smoking in my house. in this case, "smoking in my house" is the direct object of "prohibit", and there's no "from" anywhere because i don't mention who's smoking.
--> i can prohibit smoking
--> i can prohibit smokers from lighting up

d的with作状语修饰最近句子的动作，after falling需要修饰一个紧接着的动作，或者看成是伴随，逻辑主语应该是profits，都讲不通

"after" isn't a parallel signal. it can introduce another verb, but it doesn't have to; it can also be followed by -ING, or even by a noun, in these cases.
i came home after i finished printing the report
i came home after working out
i came home after midnight
... all correct