A new technique ____ out, the yields increased by 20% .
| A．having working | B．having been working |
| C．has worked | D．had been worked |
We live in an age _____ more information is available with greater ease than ever before.
| A．why | B．when | C．to whom | D．on which |
I think Tom, as the head of a big department, should either study regularly or ____his job.
| A．quits | B．to quit | C．quitting | D．quit |
Your _____ as a student will be excellent if you develop a habit of reflecting on how you learn.
| A．operation | B．growth | C．performance | D．character |
_____ all the animals I’ve ever had, these two dogs are the most sensitive to the spoken word.
| A．From | B．Of | C．For | D．With |
Studying Wendy’s menu, I found that many of the items are similar to ______ of McDonald’s.
| A．those | B．ones | C．any | D．all |