While visiting the robot exhibition, the professor kept nodding his head to express his _______ with his students’ work.

He created a lot of vivid characters in his best-selling novels, thus winning the ______ of book-lovers all over the world. 

Though lacking________, the young teacher manages the class very well.

In my opinion, it was really a great ______ for her to be pleasant to people she didn’t like.

From their ____on the top of the TV tower, visitors can have a better_____of the city．