Rewrite the following sentences as required(根据所给要求，改写句子。每空格限填一词)：

Why don’t the twins look the same as each other?(保持句意基本不变)

Why do the twins look ________　________ each other?

Rewrite the following sentences as required(根据所给要求，改写句子。每空格限填一词)：

The new housing estate in the city center is very expensive．(改为感叹句)

________　________ the new housing estate in the city center is!

Rewrite the following sentences as required(根据所给要求，改写句子。每空格限填一词)：

That new blue car is my father’s．(对划线部分提问)

________　________ is your father’s?

Rewrite the following sentences as required(根据所给要求，改写句子。每空格限填一词)：

Susan has her piano lesson on Saturday afternoon．(改为一般疑问句)

________ Susan ________ her piano lesson on Saturday afternoon?

按要求转换句子Your living-room is very bright．(改为感叹句)

________　________ your living-room is!

按要求转换句子I sent a letter to you last month．(改为被动语态)

A letter ________　________ to you last month．

按要求转换句子

The river is 10 meters wide．(对划线部分提问)

________　________ is the river?

按要求转换句子

I don't think you can finish it on time．(改为反意疑问句)

I don't think he can finish it on time, ________　________

按要求转换句子

The Changjiang River is the longest river of China．(用Yellow River 改为选择疑问句)

________ is the longest river of China, the Changjiang River ________ Yellow River?

按要求转换句子

You mustn't throw anything at the animals when you are in the zoo．(改为祈使句)

________　________ anything at the animals when you are in the zoo．