The correct answer is: D. am living/have been wasting
The sentence is in the present continuous tense, because it describes a habitual action that is happening now. The verb “waste” is in the present perfect tense, because it describes an action that has been happening for a period of time and is still happening now.
The other options are incorrect because they do not agree with the tense of the sentence. Option A, “live/waste,” is in the simple present tense, which is not appropriate for a habitual action. Option B, “lived/have wasted,” is in the simple past tense, which is not appropriate for an action that is still happening now. Option C, “have been living/wasted,” is in the present perfect continuous tense, which is not appropriate for a habitual action. Option E, “was living/am wasting,” is in the past continuous tense, which is not appropriate for an action that is still happening now.
Here is a diagram that shows the tenses of the verbs in the sentence:
Tense | Verb | Explanation
——- | ——– | ——–
Present continuous | am living | This tense is used to describe an action that is happening now.
Present perfect | have been wasting | This tense is used to describe an action that has been happening for a period of time and is still happening now.
I hope this explanation is helpful!