There is never enough ______ around.A: goingB: goesC: that goesD: to go

There is a feeling in me____ we will never know what a UFO is .A. whatB. whichC. of w

Some well-known scientists believe that there is not enough oxygen on Mars to ______ human

There is ____ food for all of us.A: scarce enoughB: enough scarcelyC: scarcely enoughD

There is a belief that man is trivial______nature and can never change global climates.A．r

There was such a storm ______ I had never experie

Some well-known scientists believe that there is not enough oxygen on Mars to ______ human