They are good friends. is no wonder that they know each other so well.A．Thi
题型：不详难度：来源：
| They are good friends. is no wonder that they know each other so well. |
答案
| D |
解析
试题分析：通过分析句子结构，可知这个句子中包含一个主语从句，而主语从句位于句末，故需要It作形式主语，只有It可以作形式主语。
点评：作为形式主语的it并无实际语义，只是为满足语法上的需要，避免句子头重脚轻，它代替的是句子的真正主语，概括起来会有如下情况：不定式作主语、动名词作主语和名词从句作主语。 |
举一反三
| Helping others is a habit, _____ you can learn even at an early age. |
| I like _____ in the autumn when the weather is clear and bright. |
—Doesn’t he feel impolite when he laughs with his mouth full of food?
—I will ask him to pay attention to his behavior. |
___________ certain that his invertion will lead to the development of production.| A．That’s | B．This is | C．It’s | D．What’s |
|
| Do you expect _____ to be a possibility that we may have five days off for the coming Dragon Boat Festival? |
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