The old scientist used to say that knowledge ______ from practice．
| A．was coming | B．comes |
| C．had come | D．would come |
Being hungry, I was in search of cake or fruit in the fridge, but found _______.
| A．everything | B．none | C．anything | D．something. |
Considering all that she had _______, she was really an amazingly cheerful woman.
| A．gone for | B．gone through | C．gone in for | D．gone about |
How long do you think ____ the car factory launches a new model?
| A．will it be until | B．will it be when | C．it will be before | D．it will be that |
Having lived in China for 8 years, Helen has a good ______ of both English and Chinese．
| A．program | B．guidance | C．command | D．ability |
—I’m losing my eyesight, I’m afraid.
—To finish this book, you ______ in front of your computer too long.
| A．work | B．are working | C．have been working | D．worked |