—When did your cousin begin to show his interest in medicine?
—It was a Saturday ___ she noticed her uncle experimenting on a frog in his lab.
| A．that | B．what | C．when | D．which |
The police always take ________ of dogs’ sharp sense of smell to search for the survivors in the earthquake.
| A．advantage | B．notice | C．possession | D．care |
— I’m sorry to have hurt you.
— Forget it. You didn’t mean ________, did you?
| A．to do | B．to | C．doing | D．doing so |
My life has been _____ with many milestones and accomplishments of which I am proud.
| A．bored | B．blessed | C．stupefied | D．satisfied |
Although some unexpected difficulties have ________ in the process, we are confident that we can handle them.
| A．risen | B．raised | C．arisen | D．aroused |
As we all know, the problems of environmental pollution facing us today are far from ____.
| A．solving | B．being solved | C．having solved | D．solved |