She devoted herself__________to her research and it earned her a good reputation in her field[ ]

There is a shortage of teachers in Western China, and it will fall on the 80s and 90s generations to this responsibility.

You are not going out today, are you –_______ I want to go shopping.

What do you think of the book , Betty —It’sa good one . Each time you read it , you will find _______.

Food problem is becoming a big one in China! —I think the food ________ before goingto shops or supermarkets.