WHILE I ...ALONG THE ROAD, I SAW A FRIEND OF MINE A) HAD CYCLED B)...
9) While I ...along the road, I saw a friend of mine
a) had cycled
b) have cycled
c) cycled
d) was cycling
9) While I ...along the road, I saw a friend of mine
a) had cycled
b) have cycled
c) cycled
d) was cycling