—I have been waiting for you so long. —Sorry, I have been in the library, ______
题型：不详难度：来源：
—I have been waiting for you so long.
—Sorry, I have been in the library, _______ my friend look for some books.| A．helped | B．helping | C．to help | D．help |
|
答案
| B |
解析
| 考察非谓语动词，根据句子结构可知，此处为状语，help的逻辑主语是I，help与逻辑主语I之间是主动关系，即选择B。 |
举一反三
If ____ in, the viruses can result in illness or even deaths.| A．breathed | B．to breathe | C．breathes | D．is breathed |
|
A year earlier, Amelia had become the first woman passenger ____ across the Atlantic.| A．fly | B．flying | C．to fly | D．flown |
|
In later years, people reported ____ a monster swimming across the lake.| A．to see | B．have seen | C．seeing | D．to have seen |
|
Witnesses also say they saw Justin ____ towards his house at 10.45 p.m.| A．walked | B．walking | C．to walk | D．to be walking |
|
--- What made Julia so unhappy?
--- ________ her new bike.| A．Lose | B．Lost | C．Losing | D．She lost |
|
最新试题
热门考点