—Why should I correct it right now, Mum? It’s OK, I think. — Well, Honey, it will _______ trouble in the future.

（2014年山东日照市高三校际联合检测）5．He said he would pick me up home after work．He didn’t，______．

As a member of one world, each of us has a role _____ to make the earth a better place.

The president spoke at the business meeting for nearly an hour without _________ his notes.

You’d better write down the phone number of that restaurant for future________.(2012·江西，29)