用think about ,think of ,think over 填空 1.Lei Feng was always ____ others

问题描述:

用think about ,think of ,think over 填空 1.Lei Feng was always ____ others
2.We need several days to ____it_____
3.I couldn't ____the name of that man anyhow
4.The time is approaching so we must_____buying a new house

1、think about
2、think over
3、think of
4、think about