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1 I thought I ... invited to the meeting until the invitation came.
1)were not
2)had not been
3)are not
2 The reports ... sent to my office but I'm still waiting for them.
1)were
2)are
3)have been
3 The documents ... shown to the CEO last week.
1)were
2)were being
3) have been
4 People hope that many environmental problems ... solved soon.
1) will be being
2) will be
3) will being
5 The papers ... signed yesterday because of the misunderstanding.
1) aren't
2) hadn't been
3) weren't
6 New solutions to this problem ... discussed all the time.
1)are being
2)are
3)have being