giải và giải thích vì sao hộ e vs\
1.The lorry (go) ___________ very fast when it hit your car.
2.The tourist lost his camera while he (walk) ___________ around the city
3.The boy fell and hurt himself while he (ride) ___________ a bicycle
4.Jim (stand) ___________ under the tree when he heard an explosion.
5 I (walk)___________down the street when it began to rain