----- When was the People’s Liberation Army’s Navy founded?
-----It ____the April of 1949.
| A．dates to | B．dated back | C．dated from | D．dates back to |
It was only after he had read the papers ________Mr.Gross realized the task before him was extremely difficult to complete.
| A．when | B．that |
| C．which | D．what |
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 |
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 |
“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 |
At no time ________the rules of the game.It was unfair to punish them.
| A．they actually broke |
| B．do they actually break |
| C．did they actually break |
| D．they had actually broken |