Question

Never _______ protecting our earth. It is the only nice planet for us to live on.

A．leave for

B．learn about

C．give up

D．look up

Answer 1

C

试题分析：句意:不要放弃保护我们的地球。对于我们来说只有一个星球可以居住。leave for 离开去某地；learn about 了解；give up 放弃；look up 查找。根据句意可知，这里让我们不要停止保护地球。give up doing sth. 放弃做某事。故选C。