Fill in the gaps with one of the question words from the list. who, what, which, where, how long, when, what time, how often, how, whose 1 .. is this bag? my sister's. 2 the children? at school. 3 paul coming back? tomorrow. 4 he drive? very dangerously. 5 that woman? mary smith. 6 you finish work? at four o'clock. 7 they buy a newspaper? every day. 8 is her name? catherine. 9 do you like best? rome or milan? 10 you been a teacher? since 1991.