In the meantime, the question facing business is whether such research is the cost.
| A．worth | B．worth of | C．worthy | D．worthwhile |
She felt ______ about wearing the improper garment in the party.
| A．embarrassing | B．embarrass | C．to embarrass | D．embarrassed |
William, as well as his friends，________invited to my birthday party the day before yesterday.
| A．is | B．was | C．are | D．were |
—What made you so________？
—John's not listening to my advice.
| A．annoy | B．annoying | C．to annoy | D．annoyed |
—Why did he________from the company?
—In order to get a more challenging job.
| A．leave | B．resign | C．remove | D．retire |
Tom was very angry about ________ to Mary’s birthday party.
| A．not inviting | B．being not invited | C．not being invited | D．not to be invited |