What if she _______ tomorrow?

1. A.
   will not come
2. B.
   doesn’t come
3. C.
   wouldn’t come
4. D.
   isn’t come

What ________ if there ______ no water or air on the earth?

What if she _______ tomorrow?

 ---What if I have to go there and know nothing about it?

--- If I______ you, I would try to find some information about it on the Internet.

A. am                     B. was          C. will be                    D. were

What ________ if there ______ no water or air on the earth?

A．happen, is                             B．will happen, is

C．will happen, will be                      D．happen ,are