Put the verbs in brackets into the Past Perfect, Past Perfect Continuous, Past Simple or Past Continuous.

1) happened, 2) was walking, 3) spotted, 4) started, 5) turned, 6) grabbed, 7) tried, 8) took, 9) saw, 10) knew, 11) had found, 12) went, 13) examined, 14) announced, 15) had been waiting, 16) came, 17) dug, 18) did not find, 19) came.