FOR EACH OF THE FOLLOWING SENTENCES, CHANGE THE SUBJECT OF THE VERB...

7. For each of the following sentences, change the subject of the verb to the plural, and change

the verb so that it agrees with its subject.

For example:

The hypothesis is still tentative.

The hypotheses are still tentative.

The nebula has been studied by many scientists.

The nebulae have been studied by many scientists.

The thesis will have been reviewed by experts.

The theses will have been reviewed by experts.