题目内容
Having lost his key，________.
| A．he couldn’t enter the room | B．the gatekeeper offered to help |
| C．the door was forced open | D．the room couldn’t be entered |
A
解析试题分析：考查句子结构：逗号前面是现在分词的完成式做状语，说明句子的主语应该是lost his keys的逻辑主语，应该是he，句意：丢了钥匙后，他不能进入房间。选A。
考点：考查句子结构
点评：用非谓语动词做状语，说明主从句的主语一致的时候，做题时可以在四个选项中找非谓语动词的逻辑主语，往往逻辑主语对了，答案就自然出现了。
______ to work overtime that evening, I missed a wonderful film.
| A．Having been asked | B．To ask |
| C．Having asked | D．To be asked |
Victims, ________ in the news, who are infected with H7N9 have come up to 28.
| A．is reported | B．reported | C．reporting | D．which reports |
The children all turned ____ the famous actress as she entered the classroom.
| A．looked at | B．to look at | C．to looking at | D．look at |
Who would you like to have __________the letter?
| A．to post | B．post | C．posted | D．posting |
—“Dear Frank, when will our wedding be?”
—“Ah, when? God knows.” He said, and ____ away from her, walked rapidly away.
| A．turning | B．turned | C．turn | D．to turn |
never to come back before he could make a big fortune, Mike left home without saying a word.
| A．Determining | B．Determined | C．Being determined | D．Decided |
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 |
Amazing it is, an astronaut’s superior position is filled with potential danger.
| A．when | B．if |
| C．unless | D．as |