Stephen Hawking believes that earth is unlikely to be the only planet       life has developed gradually.

A. that    B. where C. which D. whose

Stephen Hawking believes that earth is unlikely to be the only planet       life has developed gradually.

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Stephen Hawking believes that earth is unlikely to be the only planet ______ life has developed

gradually.（ ）

A. that　 　　　　 B. where 　　 C. which 　　　 D. whose

 Stephen Hawking believes that earth is unlikely to be the only planet       life has developed gradually.

A. that                   B. where        C. which        D. whose

Stephen Hawking believes that earth is unlikely to be the only planet       life has developed gradually.

Stephen Hawking believes that the earth is unlikely to be the only planet     _life has developed gradually.

1. A.
   that
2. B.
   where
3. C.
   which
4. D.
   whose

Stephen Hawking believes that the earth is unlikely to be the only planet _______ life has developed gradually.

Stephen Hawking believes that the earth is unlikely to be the only planet _______ life has developed gradually.

A．that              B．where            C．which            D．whose