Put the verbs in brackets into the correct tense - simple past or past continuous. Za nawiasem podana jest moja wersja. Prosiłabym o sprawdzenie.
The train just (start) started when the door (open) opened and two panting passengers (leap) leaped in.
The dentist's waiting room was full of people. Some (read) were reading magazines, others just (turn) turning over the pages.
Z góry dziękuję za pomoc. :)