There are also many communities where older people can socialize and support each other.
Improvements in technology mean that many illnesses that used to be fatal can now be treated safely and cheaply.
---Whos is knocking at the door?
3.blow something out of proportion ?夸大某事的性
（2）was/were on the point of+现在分词：表示刚刚正准备做某事。如：
则指和空间上较远的事物或人，This is a pen andthat is a pencil．
（错）I very like Engl ish.
For example, last week it explained how some birds have adapted to survive in a desert。