粗心大意地驾驶是许多事故发生的原因。(account for)

他的粗心大意的驾驶导致了这起严重的交通事故。

His careless driving _________  ____________the serious traffic accident.

--你太粗心竟然把我的书弄脏了。

　 --确实这样，非常抱歉。

---It was careless of you to have got my book dirty.

---_______ ________ _________, I’m very sorry.

他的粗心驾车使他送了性命。(cause sb.to do)

His careless driving________ ________ ________lose his life.