改为一般疑问句、改为否定句、对括号部分提问

改为一般疑问句、改为否定句、对括号部分提问
The sun is heavier than the Earth.(改为一般疑问句)
Dr Zhang works in the space station.(改为一般疑问句)
Dr Zhang has a rest [in the eveing].(对括号部分提问)
There is gravity inthe space station.(改为否定句)
There is a sunrise or sunset [every 45 minutes].(对括号部分提问)

Is the Sun is heavier than the Earth?
Does Dr Zhang works in the space station.
What`s time Dr Zhang has a rest
There is not gravity in the space station.
How often there is a sunrise or sunset.is