With two sons ______ in Afghanistan, John and Susie Mayes are working extra hard this year to make sure their grandchildren have a great Christmas.
| A．to serve | B．serving | C．having served | D．served |
At our factory there are a few machines similar to ________ described in this magazine.
| A．them | B．these | C．those | D．ones |
Although Rosemary had suffered from a serious illness for years，she lost ________ of her enthusiasm for life.
| A．some | B．neither | C．none | D．all |
I've lived in New York and Chicago，but don't like ________ of them very much.
| A．either | B．any | C．each | D．another |
To her joy，Della earned first the trust of her students and then ________ of her colleagues.
| A．that | B．one | C．ones | D．those |
---Going to the Anne’s wedding to be held this weekend?
---. I’ll be free then.
| A．You bet! | B．I can’t help it. | C．Believe it or not. | D．Forget it. |