Amazing! You wear slippers at work．— Don’t you know it’s a fashion?

There are many shops on _____ sides of the street. You can buy everything you want.

A year ago he could hardly read or write English, ______? — You are right. Nothing is too difficult if you put your heart into it. [ ]

I missed what was happening because Iwasn’t ______ very closely

下列各句中划横线词的古今义相同的一项是（　　）