---Can you tell me why you learn English so well ? ---It is very simple. _______ you work, ______ grades you will get.
The boy was _________ jeans and a very smart jacket.
The train ______ Beijing is going to set off.
A large number of children ________ standing outside the office when I got there. The number of the children _____ 2,500.
_______ a medicine box under her arm , Miss Zhao hurried to look after the man.
Linda often helps her mother ______ the housework on weekends.