3. Change the given sentences into their negative form. a) Marchionini and Maurer (1995b) saw libraries as serving three roles in learning
b) Virtual libraries often contain more up-to-date information
c) The users of the Alexandria Digital Earth Prototype Library met the four skill sets requ
for answering geographic questions,​

a) Marchionini and Maurer (1995) did not see libraries as serving three roles in learning.

b) Virtual libraries often do not contain more up-to-date information.

c) The users of the Alexandria Digital Earth Prototype Library did not meet the four skill sets required for answering geographic questions.

Explanation:

Sentences are simple statements that may contain a simple subject, verb, and corresponding objects or complete thought. And to make sentences into the negative form, the most general and common way is to add "not" in the sentences.

And for past sentences, the negative form can be made by using the past form of the auxiliary or helping verb "do" which is "did + not+ the verb".

The given sentences or statements are made in their negative forms as follows-

a) Marchionini and Maurer (1995) did not see libraries as serving three roles in learning.

b) Virtual libraries often do not contain more up-to-date information.

c) The users of the Alexandria Digital Earth Prototype Library did not meet the four skill sets required for answering geographic questions.

b

explanation: