将下列英语句子改为疑问句

题目

将下列英语句子改为疑问句
his discovery has not yet been proved（他的发现尚未证明）
改为：what.
Do the other astronomers accept his ideas?It remains a question.
（其他天文学家接受他的想法吗?仍然是一个问题)
改为：whether.
The first appearance of life on earth is still a mystery to scientists.
（第一个出现在地球上的生命对于科学家来说仍然是个谜）
改为：How .
Why is the earth becoming warmer?It is an important topic for research.
(为什么地球会变暖?它已经成为了一个重要的问题进行研究）
改为：Wht.
pluto is not longer considered a plante in our solar system .What a surprise!
（冥王星已经不再是太阳系中的行星,这真令人惊讶!）
改为：It is a surprise.

答案

What he discovered has not yet been proved.Whether the other astronomers accept his ideas remains a question.How life first appeared on earth is still a mystery to scientists.Why the earth is becoming...