— I’m on ______ diet to lose weight.
— You should take ______ exercise as often as you can.
| A．\; \ | B．\; a | C．a; \ | D．a; a |
The boy would have died, _______ on him without delay.
| A．if the doctor didn’t operate | B．if the doctor wouldn’t operate |
| C．would the doctor not operate | D．had the doctor not operated |
Do you mind ______ how you succeed?
| A．if I go and see | B．if I go seeing | C．my going and see | D．my go to see |
The police saw the woman _______ a bus and _______ a taxi.
| A．get off …get on | B．get on … get off |
| C．get off …get into | D．get on … get into |
We have _______ books in our library.
| A．plenty of | B．great many | C．a great deal of | D．great number of |
This event was rather unusual, ________?
| A．is it | B．isn’t it | C．was it | D．wasn’t it |