在东行车道发生了一起涉及超过十辆车的事故。

An accident involving over ten vehicles has ___occurred in the east-bound lane.

如果在服药期间出现任何这些症状，请立即咨询医生。

If any of these symptoms ___occur while you are taking the medicine, consult your doctor immediately.

此外，我认为大多数汽车事故的发生是由于一些司机的不负责任，我认为应该采取严厉措施来惩罚他们。

Furthermore, I think that most accidents that ___occur with cars are due to the irresponsibility of some drivers and I think strong measures should be taken in order to punish them.