问题

Over the past decades, sea ice ______ in the arctic as a result of global warming. [ ]

A: had decreased
B:; decreased
C: has been decreasing
D: is decreasing

正确答案是：

同类题型

My mother’s birthday is coming soon. What should I get ________— What about some flowers

Peter didn’t want to go to the cinema but they begged so hard that he _____ and went with them. [ ]

Welcome___Junshan Middle School!

Do you prefer drawing to music — No, I like music ________ .

well in the important exam , he came back home,andsmiling.