The boy insisted that he __________ the glass. He said that he was not there then.
The astronaut did many experiments in the spaceship, great help for knowing more about space.
It has been proved by the fact that watching violence on TV may cause children’s _____ behavior.
Peter was so excited he received an invitation from his friend to visit Chongqing.
To his disappointment, the opinion he had stuck out wrong.
She must be in the classroom, ?