Corrections

我的翻译作业！ Originally they were only friends, and didn't start dating until a couple of months ago.

原来他们只是普通的朋友， 直到两个月时开始谈恋爱。 Because they had a certain understanding about each other, they were not worried that a long-distance romance would bring them any trouble.

因为他们有互相有一定的了解，他们不怕长途的爱情会造成任何麻烦。 They often sent short messages and write emails to each other.

他们常常发送短信和电子邮件 Even though they didn't meet often, their relationship has developed quite successfully.

甚至他们很少有机会见面，他们的爱情发展很顺利的。 2.

It is quite dangerous to use a cellular phone in the car to chat with your friends.

开车的时候用手机跟你的朋友聊天很危险。 It is quite possible that either you will hit someone or someone will hit you if you don't pay attention while driving.

要是你开车的时候不小心，有一定的可能你会撞到别人后者别的人会撞到你。 3.

Sending text messages is no more troublesome than making a phone call; especially if you don't like to waste time chatting with people, sending text messages can be said to be a convenient method of communication.

发送短信不比打电话麻烦；尤其你要是不喜欢浪费时间聊天， 发送短信就是很方便的通信。 No wonder nowadays young people love sending textmessages. 难怪如今念经人爱发送短信。