问题

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

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

正确答案是：

同类题型

You ____be tired—you have worked only for ten minutes．

Do not let any failures discourage you, for you can never tell ________ close you may be to victory

Forests are being cut and burned at________a speed________they will disappear from the earth in the near future[ ]

The day he had been looking forward to______________at last.

y in life gets _______ what they thought they were going to get.— But if you work really hard and you’re kind, amazing things will happen.