Please help me Past Perfect tense(15)examples

Using the formula ,
S+had+v3+O

Past Perfect continuous tense (15)examples

Using the formula,
S+had+been+v1+ing+O
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Describe how subjectivity and other factors (monetary and non-monetary) affect a person's calculation of cost and benefit. give an example of a cost-benefit analysis you have performed. use complete sentences and appropriate economic terms and concepts learned in this course.

Read the excerpt from black boy wright uses this personal experience to establish

Which phrases from the text contain words with strong connotations that describe the violence in honduras? check all that apply.