The moment I got home, I found I ________ my jacket on the playground.(2008·陕西)

I listened carefully to his long boringspeech, but could not ___ what he was talking about．

The missing children haven’t been found yet. Something terrible ________ to them.

I still remember my wonderful stay there ________ I worked in the distant mountain village.—But everything is changing so fast, the persons there aren’t the ones ______they used to be.

Have you finished your homework yet—Not yet. I ______ to do it just a fewminutes ago.