Do you know_____ ? Sorry,I’ve no idea.
_____ a teacher, John thinks that his main duty is to help the students become better learners.[ ]
Do you have any plans for this weekend?— I’m not sure. I _____ go climbing Mount Baoshi.
Karen was always thinking we were talking about his poor past. Every time we were chatting together, he would be all _____.
I’ll try it again．Never in my life _____ such a particular difficulty．