1. The dou had been given the second best time slot.

a. past perfect in the passive voice
b. past continuous in the passive voice
c. an infinitive in the passive voice
Answer a
2. The promotional poster was designed by Zach
a. past continuous in the passive voice
b. an infinitive in the passive voice
c. simple past in the passive voice
Answer c
3. the club's amplication system needed to be adjusted continually
a. past perfect in the passive voice
b. an infinitive in passive voice
c. simple past in the passive voice
answer b
4.
the owners must have installed the equipement 20 years ago
a. present perfect in the passive voice
b. past tense with a modal
c. present continuous with a modal
d. future perfect in the passive voice
Answer b
5. Zach might be getting a good portable system next month.
a. present perfect in the passive voice
b. past tense with a modal
c. present continuous with a modal
d. future perfect in the passive voice
Answer a

3 is correct.

5 is not.

#1 - correct

#2 - correct
#3 - for which verb? "needed" or "to be adjusted"?
#4 - I don't think any of the choices is correct. It reads like present perfect with a modal.
#5 - incorrect

3. adjusted

5. b

5. d

Present perfect will have "have -ed" somewhere in the verb phrase.

Past tense will have NO auxiliary verbs. I don't know how that would even occur in a sentence. Modals ARE a form of auxiliary verbs.

Present continuous will have "be" or some other present tense form of "be" plus a verb ending in -ing.

Future perfect will ALWAYS have "will have" somewhere in the verb phrase.

the answer are:

73) 1
74) 4
75) 4
76)1
77) 3

To answer these questions, you need to determine the verb tense and voice being used in each sentence. Let's break it down:

1. "The dou had been given the second best time slot."
The verb tense is past perfect, which indicates an action that happened before another past action. The voice is passive, as the subject ("the dou") is receiving the action rather than performing it. Therefore, the answer is a. past perfect in the passive voice.

2. "The promotional poster was designed by Zach."
The verb tense is simple past, which indicates a completed action in the past. The voice is passive as well, as the subject ("promotional poster") is receiving the action. Therefore, the answer is c. simple past in the passive voice.

3. "The club's amplification system needed to be adjusted continually."
The verb tense here is an infinitive, as "needed" is followed by "to be adjusted." The voice is passive because the subject ("the club's amplification system") is again receiving the action. Therefore, the answer is b. an infinitive in passive voice.

4. "The owners must have installed the equipment 20 years ago."
The verb tense used here is past tense with a modal verb ("must have"), indicating a past action with certainty. The voice is active because the subject ("the owners") is performing the action. Therefore, the answer is b. past tense with a modal.

5. "Zach might be getting a good portable system next month."
The verb tense is present perfect, as "might be getting" indicates a current possibility or future action. The voice is active because the subject ("Zach") is the one receiving the action. Therefore, the answer is a. present perfect in the passive voice.