Present Perfect VS Present Perfect Continuous

I (work) on this problem for 2 months.

• have worked

• have been worked

• have been working

I (try) to find Nick all day.

• have been tryed

• tryed

• have been trying

I can't find my umbrella. I think, somebody (take) it by mistake.

• has taken

• has took

• has been taking

I (learn) Spanish since we last met.

• have been learnt

• have been learning

• have learnt

I know New York perfectly well. I (be) there several times.

• have been

• have be

• have been being

Sue (write) letters all morning.

• has been writing

• has been write

• has written

My aunt (teach) Biology for more than 20 years.

• has been teach

• has teached

• has been teaching

Jim (work) here for two months.

• has been work

• has been working

• has worked

Tina (learn) English for 4 years.

• has learned

• has been learning

• has been learned

I (already/solve) this problem.

• have already solve

• have been already solving

• already solved