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My parents have got married since 1992. They have known each other well for quite a long timE. We haven’t heard from Jack since two weeks ago. It has been ten years since he joined the cluB.
have they known; get have they known; were going to get do they know; are going to get had they known; got
Had we known We had known it If we were known If we know
knew have known have known know
Just after Just when Ever since Just before
have known had known knew know
We know quite a lot Only little we have known
Very little have we known So much we do know
How far How often How long How soon
Would we know Should we know Have we known Had we known
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