27. The development of science and technology must benefit people _____ harm them.
Thinking that her daughter was doing homework, the mother left the room, ___________.
When you retell the story, don't___________any important details.
___________World Expo is regarded as the Olympic Games of the economy, science and technology, ___________expert said.
It is generally considered unwise to give a child___________he or she wants.
Look at the player ______ the number 11 shirt; I think he ______ the game.