The old couple have been married for 40 years and never once _______ with each other.
| A．they had quarreled | B．they have quarreled |
| C．have they quarreled | D．had they quarreled |
—How dangerous it was!
—Yes, but for the passer-by’s quick action, the girl ________.
| A．was drowned | B．could have been drowned |
| C．had drowned | D．should be drowned |
Due to the widespread________ of this medical technology, more diseases can be discovered and treated at an early stage.
| A．presentation | B．application |
| C．qualification | D．appreciation |
_____ her leg the last time, Brenda decided not to go on the school skiing trip this year.
| A．Breaking | B．Broken | C．To break | D．Having broken |
After a successful operation, my brother is beginning to ___ and will soon come back to school.
| A．pick up | B．wake up | C．grow up | D．show up |
As the New Year opens, let us ask what ____ of us can do to create safe communities.
| A．each | B．every | C．neither | D．none |