Was it when he was taking the driving test he ran into a pig in the street?

1. A.
   where
2. B.
   when
3. C.
   that
4. D.
   how

（2010·江苏南京金陵中学高三10月月考）24. Was it when he was taking the driving test         he ran into a pig in the street?

A. where      B. when       C. that         D. how

.（2010·辽宁抚顺一中高三上学期9月月考）4．Was it when he was taking the driving test         ________ he ran into a pig in the street?

A．where       B．when    C．that        D．how