I have 4 question on which progressive or emphatic verb tenses are used??? Questions are in the comments.. (ILL GIVE A MEDAL) PLEASE?

Question

anonymous · Answer

1. Jake has been mowing the lawn for two hours now.
* present progressive
* past perfect progressive
* past progressive
* present perfect progressive

anonymous · Answer

2. They had been camping in the area when the forest fire began.
* present progressive 
* past perfect progressive 
* past progressive 
* present perfect progressive

anonymous · Answer

3. Kalman had been sleeping throughout the memorable day.
* present progressive 
* past perfect progressive 
* past progressive 
* present perfect progressive

anonymous · Answer

4. As of next month, my best friend and I will have known each other for twelve years.
* present progressive 
* past perfect progressive 
* past progressive 
* present perfect progressive

anonymous · Answer

@helpout3

anonymous · Answer

c.
b.
?
d