7. Look at the pairs of sentences below. Both of them are grammatically correct. Choose one sentence in each pair, a or b, that is more logical.
1. a) It rained heavily when I ran for the bus.
b) It was raining heavily when I ran for the bus.
2. a) The train just came into the station when we arrived on the platform.
b) The train was just coming into the station when we arrived on the platform.
3. a) He broke his leg while riding his bike at the weekend.
b) He was breaking his leg while riding his bike at the weekend.
4. a) While I was watching TV, someone knocked on the window.
b) While I was watching TV, someone was knocking on the window.
5. a) No wonder she fell off her bike. She didn't look where she was going.
b) No wonder she fell off her bike. She wasn't looking where she was going.
Помагите нужно​