一些词汇和语法结构专项训练的选择题，大家进来看一看

timgraceUID：2458589

1. It is necessary that an efficient worker _____ his work on time.
    选择的答案是 accomplish 为何不加es？

2. ______, he would not have recovered so quickly
   A. Hadn't he been taken good care of
   B. Had he not been taken good care of
   C. Had not he been taken good care of
   D. Had he been not taken good care of
   选B， 能否分析一下语法。。。

3. Nowhere in nature is aluminum found free, owing to its always __ with other elements, most commonly with oxygen.
   A. being combined    B. having combined   
   选A， 不知道为什么要用被动，B错在哪里呢？

4. It ____ to see so many children in that montainous area who cannot even afford elementary education.
   A. pains her   B. is pained.
   选A，我也觉得选B怪怪的，但是说不出错在哪里，大家说呢？

5.______ for a long time, the fields are all dried up.
   A. There having been no rain   B.There being no rain.
   答案是B，但是我觉得应该用完成时态，应为“没雨”这个事情发生在“旱”之前。

6. You should know better than ___ your little sister at home by herself
    所选答案是“ to leave " 这是一个什么短语？是什么意思？

7. In the last the years, there have been many changes in family life. Are there changes _____?
    所选答案是“ for the better or for the worse"。这是什么意思？

8. Anna was reading a piece of science fiction, completely _____ to the outside world.
    所选答案是 lost . 请大家解释一下。

9. ______ in the USA, St. Louis has now become the 24th largest city.
   A. Being the fourth biggest city    B. Once the fourth biggest city
   选B， 搞不懂once的在这里的意思和用法，A错在哪里？

10.  There was a teapot fashioned like a china duck, out of ____ open mouth the tea was supposed to come
       所选答案是whose 这句话啥意思？

husterUID：2110691

cet已不考语法好多年