The old man had three sons, all of ____ died during World War Ⅱ.
| A．whose | B．that | C．whom | D．who |
When I talked with my grandma on the phone, she sounded weak, but by the time we ___ up, her voice had been full of life.
| A．were hanging | B．had hung | C．hung | D．would hang |
Gun control is a subjectAmericans have argued for a long time .
| A．of which | B．with which | C．about which | D．into which |
It is generally said that man’s desire is hard _______.
| A．to satisfy | B．to be satisfied | C．to met | D．to being satisfied |
Every evening after dinner, if not from work, I will spend some time walking my dog.
| A．being tired | B．tiring | C．tired | D．to be tired |
Doctors recommend that all children ________ vaccinated against measles(麻疹).
| A．should | B．could be | C．are | D．be |