Question

There isn't going to ________ enough space to ________ on the earth in the future.

1. A.
   have；stand in
2. B.
   be；stand
3. C.
   have；stand
4. D.
   be；stand in

Answer 1

D
there be句型中不使用动词have表示“有”，而根据句意，“站立于空间里”直接选用动词stand in。