Question

18. _________ water to grow is well-known.

 A. That trees need      B. These trees need

 C. That tree needs      D. Trees need

Answer 1

A

解析:

 选A。本句的意思是：树需要水生长是众所周知的。

That trees need water to grow是一个主语从句，放在句子的开头，引导词that不能省略。