Mr. Zhang has retired already. He in our school for over thirty years.
| A．has worked | B．had worked | C．worked | D．was working |
No matter what I do, my efforts ________always end in failure.
| A．lose weight | B．to lose weight | C．losing weight | D．lost weight |
The factory used 65 percent of the raw materials, the rest of which _____ saved for other purposes.
| A．is | B．are | C．was | D．were |
There’s nothing more important than good health, _______?
| A．is there | B．isn’t it | C．isn’t there | D．is it |
To Daniel’s parents’ surprise, the living room was clean and tidy, with the window ______and fresh air ______in.
| A．open; coming | B．to open; coming | C．open; come | D．opened; came |
William spends too much time in Internet cafes, ________he either plays games or chats on the internet.
| A．that | B．where | C．which | D．whose |