Let’s look at some of the questions:
Here is the first question from the 2012 English Center Test. This is from part 2.
1. absorbed 2. accompanied 3. adopted 4. appointed
Is this a grammar question? What skills are at use here?
It is simply vocabulary and usage. You have to know how to properly use the phrase, “adopt a policy.” You have to be able to use this phrase.
Only knowing the meaning of absorbed, accompanied, adopted, and appointed is not enough for a test-taker because the examinee cannot be sure which one will fit with “policy.”
Grammar knowledge is useless in the question. Knowing that “have” is a modal and adopt is a verb will not help a test-taker. Knowing that policy is an object will not help.
Here is another one, the second one:
Could you show me how to make my mobile phone ring differently ________ who is calling me?
1. depending on 2. in spite of 3. on behalf of 4. relying on
This is also is not a grammar question. It does not matter if you know that ‘differently’ is an adverb or that ‘show’ is the verb. That will not help you answer this question.
Again, we can see that in this section, you need to know what the meaning of the four phrases are. It is not enough to know only the meaning of

Next post, I will look at the other “grammar” section, and we will see what test-takers really need to do well on this test.