4.(★★★☆☆)脑筋急转弯。
It isn't my sister, nor(也不是)my brother, but still(仍然)is the child of my father and mother.
Who is it? ______

It's me.

5.(★★★★☆)请根据句子内容判断画线部分的意思。
()(1)The students are going out of the classroom in threes and fours.
A. 说三道四
B. 三言两语
C. 各奔东西
D. 三五成群
()(2)— Can you do this work?
— Let me have a go at it, all right?
A. 去看看
B. 试一下
C. 跑一趟
D. 问一下

(1)D　(2)B