No government can justly claim authority it is based on the will of the people．
| A．after | B．unless | C．so that | D．while |
The boys are playing________the edge of the river.
| A．on |
| B．by |
| C．in |
| D．at |
That shop mainly________agricultural products.
| A．trades |
| B．trades for |
| C．trades in |
| D．trades with |
The garden is________with the sweet of flowers.
| A．full |
| B．heavy |
| C．busy |
| D．pleased |
A child who lives in a boring environment will develop his intelligence less than one who lives in rich and varied________.
| A．places of interest |
| B．surroundings |
| C．surrounding |
| D．customs |
The policemen soon came to the________where the accident happened.
| A．place |
| B．spot |
| C．situation |
| D．location |