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was waiting had waited am waiting have waited
dropping; start had dropped; started dropped; have started dropped; was starting
must drop it should have dropped it must have dropped it had dropped it
was waiting had waited am waiting has waited
must drop should have dropped had dropped must have dropped
must drop it might drop must have dropped it should have dropped it.
was waiting had waited am waiting have waited
told would tell had told had been telling
was waiting had waited am waiting have waited
sat was sitting have sat were sitting
On hearing the sad news, sank Hearing the sad news, dropped At the sad news, fell When I heard the sad news, sank
told would tell had told had been telling
must drop it might drop must have dropped it should have dropped it.
was waiting had waited am waiting have waited
sat was sitting have sat were sitting
was waiting had waited am waiting have waited
must drop it should have dropped it must have dropped it ought to have dropped it
told would tell had told had been telling
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