Keep quite. Don't make any ____.

Seeing the happy ______ of children playing in the park, I’m full of joy and confidence in the future of our travel agency.

American artist Jeremy Telford made a room with balloons． He got the____    from Bag End in Lord the Rings, which is a hole in the ground where a Hobbit（霍比特人）lives in the film．

_____ the different cultures, values and levels of economic development in China and the West, both sides should respect the diversity of their development paths.

 At the meeting they discussed three different ____ to the study of English grammar.