You have to speak slowly in order to ____.
| A．make you understood | B．make youself understood | C．make them understand | D．make themselves understand |
Christina wasn’t saying anything, but the professor smiled at her _______she had done something very clever.
| A．as if | B．now that | C．while | D．though |
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 |