When the expression first came into being, people refused to use it but _____ they began to accept it.
| A．usually | B．gradually |
| C．frequently | D．quickly |
When you________, use a handkerchief to cover your nose and mouth. This is particularly necessary in public places.
| A．speak | B．whisper | C．sneeze | D．breathe |
Pictures on TV show the quake-hit capital________to ruins and helpless survivors waiting eagerly for relief.
| A．decreased | B．destroyed | C．returned | D．reduced |
Having worked as a doctor for so many years, Mr. White has________rich experience in battling with various diseases.
| A．accumulated | B．reserved | C．increased | D．developed |
A trip to the forest park is a wonderful________of my happy childhood, when I had no end of fun with my playmates.
| A．adventure | B．celebration | C．reminder | D．attraction |
I must have been a great_________to my parents in those hard days, for I never failed to live up to their expectations.
| A．achievement | B．comfort | C．disappointment | D．support |