_____ you have any disagreement, we will carry out the plan next week.
| A．Unless | B．Though | C．However | D．When |
The basketball player reacted _______ the judge’s decision by withdrawing from the match.
| A．on | B．to | C．against | D．by |
Most of the world’s rice is grown in the tropical _______.
| A．section | B．location | C．district | D．zone |
Mary was so touched by Tom’s generosity that for a moment she was _______ for words.
| A．in loss | B．in a loss | C．at loss | D．at a loss |
Children must _______ road safety before they are allowed to ride a bike on the road.
| A．instruct in | B．instruct | C．be instructed in | D．be instructed |
The officer demanded that such things ________ from happening again.
| A．prevented | B．prevent | C．be prevented | D．were prevented |