With Present perfect Continuous, not easy...

[storm]

Please help me with the fill-in things here...

Matt and Sarah 16. ___________ (have) some difficulties in their relationship lately, so they 17.___________ (go) to a marriage counselor yesterday. I hope they 18.___________ (work) everything out soon.
_________________
There are always things I have to learn.

[Mister Micawber]

.
Hello, Storm-- and welcome to English-Test.net.

I'd like to see you try first to supply answers, and then we'll check your efforts.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber

[storm]

I would try as you may view in the <...> below:

Matt and Sarah <have been having> (have) some difficulties in their relationship lately, so they <went> (go) to a marriage counselor yesterday. I hope they <will work> (work) everything out soon.
_________________
There are always things I have to learn.

[Mister Micawber]

.
Those are good answers, storm. If the word 'yesterday' were not in the sentence, then you could use present perfect continuous there, too:

Matt and Sarah have been having some difficulties in their relationship lately, so they have been going to a marriage counselor. I hope they work everything out soon.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber

[storm]

I am appy with the clarification.
I just like it here that people help me.
_________________
There are always things I have to learn.