(a) Anger is nothing but a vice. (Affirmative) (b) So, we should control it for our own sake. (passive)
(c) The bee is a special type of insect. (Negative)
(d) It's duty is to fly from flower to flower to collect honey. (Interrogative)
(e) Honey is collected without any rest. (Active)​

I looked this question up. Apparently, we should make the changes without changing the meanings of the sentences.

1. Anger is a vice.

2. So, it should be controlled by us for our own sake.

3. The bee is nothing but a special type of insect.

4. Is its duty to fly from flower to flower to collect honey?

5. They collect honey without any rest.

Explanation:

The phrase "to be nothing but..." is negative, but it can be used to say the same thing an affirmative sentence does. Example: You are cray! = You are nothing but crazy!In the active voice, the subject of the sentence is also the performer of the action. In the passive voice, the subject is the receiver of the action. The performer appears in the form of agent, after the preposition "by". Example: I cut the tree. (active) = The tree was cut by me. (passive)If a sentence has the auxiliary verb "to be", in order to make it interrogative, we must place the auxiliary before the subject. Example: It is time to go. (affirmative) = Is it time to go? (interrogative)