Some of the tricks people tend to _______ on each other on April 1st should be forbidden.
Yang Liwei,China’s first spaceman,prepared carefully for going to space so that he could be sure of success at his first _________.
Seeing the happy_________of children playing together there,I’m full of joy and hope for the future of our country.
In the after-class activities,the students had plenty of_________and gained a lot of practical _________.
Jason has been preparing carefully for his English examination so that he could be sure of passing it at his first_________ .
She is always ready to help people in trouble because she thinks it is a_________ .