—It’s reported that the new underground line has been completed．
—Yes but it hasn’t been made clear it’s to be opened to traffic．
| A．that | B．who | C．what | D．when |
It was not until near the end of the letter________she mentioned her own plan.
| A．that | B．where | C．why | D．when |
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 |
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 |
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 |