【简答题】T alking on a mobile phone is expensive, so a lot of people send text messages. Text messages are much cheaper than talking on a mobile phone, and you can make it even cheaper by shortening the words ...
【简答题】Cars are lots of fun, but they could also be erous. We have to be careful when we drive them or ride in them. It’s always a good idea to put on your seat belt when you’re in a car. Why? Think abou...