问题

In the past decades, sea ice ______ in the Arctic as a result of global warming.

A:had melted
B:has been melting
C:melted
D:is melting

正确答案是：

标签： decades , past , sea

同类题型

Miss Li teaches ______ English every day.

Xu Qian is a funny girl. She loves to __________ jokes.

What’s he doing? HeTv.

Teacher: Does anyone know 　　　 the famous writer was born? Mei-ling: I know! In Taitung, right? Teacher: You got it!

The girl is too young ___ to school. [ ]