Использовать Present Perfect или Present Perfect Continuos с глаголами в скобках A: How long ... you ... (try) to find

A: How long have you been trying (Present Perfect Continuous) to find a job?

B: For three years. It has been (Present Perfect) really difficult.

A: How many jobs have you had (Present Perfect)?

B: About thirty, maybe more I have done (Present Perfect) everything.

A: How long have you been standing (Present Perfect Continuous) here today?

B: I have been waiting (Present Perfect Continuous) since 8:00 this morning, and I\'m freezing.