It is three years _____ my brother joined the army and it will be ten days ____ he comes back to see my parents.
A. when; after B. since; when C. before; until D. since; before
It is three years _____ my brother joined the army and it will be ten days ____ he comes back to see my parents.
A. when; after B. since; when C. before; until D. since; before