He spends two hours on his homework every day. (用It takes…句型改写)

My mother asked me to listen to the English programs on the radio.(改为直接引语)

“Take some exercise after dinner.” The doctor said to me. (改为间接引语)

It was not difficult for the police to find out the murderer.

The police had no_______ _______ ________ ___________ the murderer.

我觉得词汇和语法是我学习英语的最大困难。

很难和他交朋友。

_______________________________________________________________

科学理论必须建立在事实的基础上。

这辆自行车属于谁？

要从投资的角度来考虑那件事儿。

山顶上有一棵小树。