fill tenses
The students (a) _______ (go) back to their class the moment the drill (b) ________ (be) over. A boy (c) _______ (run) very fast and suddenly he (d) _______ (fall) down. The teacher (e)_______ (help) him stand up and then told him never to be in a hurry as it always (f) _______ (trouble)
no unwanted answer / there all answers will be reported
