Some people fear that ________ air pollution may bring about changes in _______ weather around the world.
| A．/; the | B．the; / | C．an; the | D．the; a |
Does the way you thought of___________ water clean make any sense?
| A．making | B．how to make | C．to make | D．having made |
—What do you think of his opinion?
—None has given me ___________ piece of advice.
| A．a better | B．a best | C．the best | D．the better |
It was only with the help of the local guide________________.
| A．was the mountain climber rescued |
| B．that the mountain climber was rescued |
| C．when the mountain climber was rescued |
| D．then the mountain climber was rescued |
______ reminded me ______ your father is the way you speak.
| A．That; to | B．What; of | C．Whether; to | D．Why; of |
. Just on the first day of the summer day they _____ for Mount Tai for a climbing.
| A．set aside | B．set down | C．set off | D．set up |