I was riding a bike when the accrdent nappenea(提问)＿＿＿ ＿＿＿you

I was riding a bike when the accrdent nappenea(提问)＿＿＿ ＿＿＿you When I saw a strange riding on my bike,I ( )the police.A cal I hurt my leg when I ___(rode my bike 还是 was riding my bike) I was afraid of ＿＿＿＿＿into the river when I was young. A.to j The door bell ＿＿when I was leaving.A.rang B.ringing C.rings The door bell ＿＿when I was leaving.A.am telephone B.telephon I ＿＿ when she knocked at the door.A.cook B.cooks C.was cooki I hurt my leg when I __________(rode my bike还是was riding my When the UFO ___(起飞),the man was riding the bike. When I started riding a bike a couple of years ago,I didn't When I started riding a bike a couple of years ago, I didn't Mary was hit by a car _____she was riding a bike to the zoo