In the past twenty years great changes _______in China.
| A．were taken place | B．have been taken place |
| C．have taken place | D．were happened |
The boy slipped out of the room and headed for the swimming pool without his parents' _____.
| A．command | B．conviction | C．consent | D．compromise |
In this factory, suggestions often have to wait for months before they are fully _____.
| A．admitted | B．acknowledged | C．absorbed | D．considered |
The new secretary has written a remarkably _____ report only in a few pages but with all the details.
| A．concise | B．clear | C．precise | D．elaborate |
More than one-third of the Chinese in the United States live in California, _____ in San Francisco.
A. previouslyB. predominantly C practicallyD. permanently
She couldn't wait ________ home after such a long and tiring journey.
| A．going | B．to go | C．go | D．went |