It was in the lab ______ was taken charge of by Pro. Harris ______ they did the experiment.
| A．which; where | B．that; which | C．whom; that | D．which; that |
Only when he apologizes for his rudeness ____to him again.
| A．I will speak. | B．will I speak. | C．do I speak. | D．I speak. |
“Never for a second,” the boy says, “______ that my father would come to my rescue.”
| A．I doubted | B．do I doubt | C．I have doubted | D．did I doubt |
Not once ________ to Michael that he could one day become a top student in his class.
| A．occurred it | B．it did occur | C．it occurred | D．did it occur |
Not until he went through real hardship _____the love we have for our families is important.
| A．had he realized | B．did he realize | C．he realized | D．he had realized |
（2013·大纲卷）Only By increasing the numBer of doctors By 50 percent properly in this hospital.
| A．can be the patients | B．can the patients be treated |
| C．the patients can be treated | D．treated can be the patients |