It took me a long time before I was able to fully appreciate what they ______ fo
题型：不详难度：来源：
It took me a long time before I was able to fully appreciate what they ______ for me.| A．had done | B．did | C．would do | D．were doing |
|
答案
| A |
解析
| 考查时态。从句的动作发生在谓语动词之前，题中谓语动词为took，“过去的过去”应用过去完成时态。故选A。 |
举一反三
Up to now, the program ______ thousands of children who would otherwise have died.| A．would save | B．saves | C．had saved | D．has saved |
|
—Time . It’s likely that we will miss the bus.
—Don’t worry. There are still 10 minutes left.| A．has run out | B．has been run out | C．is running out | D．is being run out |
|
—I haven’t seen Tom for years. Any news about him?
—He in a toy factory for two years. Now he’s working on a farm.| A．works | B．worked | C．has worked | D．had worked |
|
The black box is a necessary device on an airplane, which records its speed, direction and whether everything on the airplane______ normally. | A．will function | B．functioned | C．is functioning | D．has functioned |
|
—You may find the key to the math problem on page 107.
—Ah, it’s so simple. I wonder why I _____ of that.| A．hadn’t thought | B．haven’t thought | C．didn’t think | D．wasn’t thinking |
|
最新试题
热门考点