When I was doing my homework at home, it suddenly began to rain.<br />What were you doing, Bill?<br />Oh, I was driving at the time.<br />Question, what was Bill doing when it began to rain?<br />When I was doing my homework at home, it suddenly began to rain.<br />What were you doing, Bill?<br />Oh, I was driving at the time.<br />Question, what was Bill doing when it began to rain?
A . He was driving.B . He was buying a book.C . He was doing his homework.