- Paul and Jane moved to Paris two years ago.
- It is…
If the starting words were "it has" I could have written "It has been two years since…". But the auxiliary "be" is used instead and I am not allowed to change it. I don't have a single idea what the solution might be.
Best Answer
"It is two years since Paul and Jane moved to Paris." is still correct, even though less common.
For example, have a look at this quote by Sally Brampton (which is the best example Google spewed out at a quick glance — I'm sure there are many more to find)
You might also want to have a look at English Grammar in Use : a reference and practice book for intermediate students of English by Raymond Murphy.