Can you find a sentence situation _______ this phrase can be used?
A. where B
. when C. which D. that
The most important thing to keep in ________ mind when dealing with________ emergency is to stay calm.
| A．/; the | B．the; an |
| C．the; the | D．/; an |
We can never expect ________ bluer sky unless we create________ less polluted world.
| A．a; a | B．a; the |
| C．the; a | D．the; the |
Failure to face up to painful experience can be ________ form of stress itself, and can increase ________ possibility of illness.
| A．the; / | B．a; a |
| C．a; the | D．/; the |
In________ most countries, a university degree can give you ________ flying start in life.
| A．the; a | B．the; / |
| C．/；/ | D．/; a |
This area experienced ________ heaviest rainfall in ________ month of May.
| A．不填； a | B．a ; the |
| C．the ; the | D．the ; a |