The chairman thoughtnecessary to invite Professor Smith to speak at the meeting. [ ]

In my opinion, knowledge in the book is important, but of at least________importance is personal experience.[ ]

72. For many days I have been trying to ______ what it is that makes Jack so angry.

When asked to explain _____ he does to make his students so fascinated with his lessons, the teacher paused and thought deeply. [ ]

Kangkang won the first place in the _______ in the school sports meet last week.