no life has been found outside the earth, but while some scientists are activelysearching for living things in outer space, others firmly believe there ______.

The parade was so wonderful that Icouldn’t_______ photos.

________ is no doubt _______ Mo Yan, this year’s Nobel Prize winner in Literature, ever did so much on his way to success

When a new disease breaks out, experts must ________ what to do in the fastest way.[ ]

He said he would come to see us thenext afternoon.