_____enough thought to who the readers of the book would be，the publisher made a wrong
decision and suffered a heavy financial loss．
| A．Not giving | B．Not being given | C．Having not given | D．Not having given |
—Dear me! It’s you, Bob! I ______ to recognize you at first sight!
—Nor did I! Time has changed us a lot!
| A．fail | B．failed |
| C．have failed | D．had failed |
_________ in the adult ceremony, the senior students feel they are shouldering heavier responsibilities now.
| A．Swear | B．Sworn |
| C．Having sworn | D．To have sworn |
In spite of his ________ to be a scholar in that field, he is not well equipped with that talent.
| A．potential | B．competence |
| C．ambition | D．character |
One reason ______ Billy Crystal is popular with all age groups is _______ he is quick thinking and has the ability to amuse the audience.
| A．that, that | B．why, because |
| C．why, why | D．why, that |
The audience _______ as they waited for the comedian to come on the stage.
| A．fell silence | B．fell silent |
| C．fall silently | D．feel silent |