polar bears(北极熊)(live,lives ,are living)in the north pole(北极)选择括号里的正确的答案
问题描述：
polar bears(北极熊)(live,lives ,are living)in the north pole(北极)选择括号里的正确的答案
what(happens,happend,was happening)yesterday?
lt(rians,rianed,will rian)this afternoon
答
前一个是第一个.第二个是第二个.最后那个是最后一个