主要用来拧紧和松开多种规格的六角头或方头螺栓、螺母的是()扳手。
A.呆
B.活动
C.梅花
D.两用
参考答案:B
—What has Tom been doing recently?
—I don’t know, ________ care.
A.nor do I
B.nor I do
C.neither am I
D.neither I am
_______ it two days ago when you arrived home late that you came across her?
A.Did
B.Was
C.Does
D.Is