管形零件直接通电磁化时,内壁磁场最大
参考答案:错
—Dongdong, ____ toy car is that? —It’s ____.
A.who’s; hers
B.whose; mine
C.whose; her
D.who’s; my
I ______have come here in time, but I met an old friend of mine. I stopped and talked with him for some time.
A.shouldn’t
B.must
C.needn’t
D.could