.It is the third time that our water supply _______during the day.
| A．was cut out | B．has been cut off | C．has been call off | D．was cut down |
________ how others react to the book you have just read creates an added pleasure.
| A．Hearing | B．Hear |
| C．Having heard | D．To be hearing |
The engine just won’t start.Something seems________wrong with it.
| A．to go | B．to have gone |
| C．going | D．having gone |
When we saw the road________with snow，we decided to spend the holiday at home.
| A．block | B．to block |
| C．blocking | D．blocked |
They might just have a place________on the writing course—why don’t you give it a try?
| A．left | B．leave |
| C．leaving | D．to leave |
The witnesses________by the police just now gave very different descriptions of the fight.
| A．questioned | B．being questioned |
| C．to be questioned | D．having questioned |