No one is sure who thedictionary ____.[ ]

Sally takes more time on her study because she believes ________ she does, _______ she’ll be.

You don’t have to _______ every new word in thedictionary while reading.

I have two brothers. __________ is a doctor, ________ is a teacher.

The traditional approach __________ with complex problems is to break them down into smaller，more easily managed problems.