9. to form the comparative degree of adverbs, you should add which of the following words

A. More or less. The comparative degree means that you are comparing two or more things. It's important to remember that this degree compares them relative to each other. If you are moving more quickly than before, it means that you are comparing the past with the present. You are comparing them relatively, since you moved slower in the past than you are now in the present. If you are speaking less smoothly than the others, it means that you are comparing yourself with other people. It compares your speech relative to the others': your speech was more jumbled than that of the others.

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c -invasion by the moroccans.