23.— It’s a long time _____ I saw you last.
— Yes, and what a pity! It will be a long time ____ we see each other again.
A.before, since | B.since, before | C.when, when | D.since, when |
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23.— It’s a long time _____ I saw you last.
— Yes, and what a pity! It will be a long time ____ we see each other again.
A.before, since | B.since, before | C.when, when | D.since, when |