Whenever you meet with difficulties, you can ask the policeman ____help.
| A．at | B．in | C．for | D．with |
The boy was _________ jeans and a very smart jacket.
| A．put on | B．wear | C．wearing | D．dressing |
The train ______ Beijing is going to set off.
| A．of | B．to | C．in | D．on |
A large number of children ________ standing outside the office when I got there. The number of the children _____ 2,500.
| A．is; are | B．is ; is | C．are ; is | D．are ; are |
_______ a medicine box under her arm , Miss Zhao hurried to look after the man.
| A．with | B．to | C．of | D．for |
Linda often helps her mother ______ the housework on weekends.
| A．with | B．to | C．of | D．for |