I can guess you were in a hurry. You ＿＿ your sweater inside out.

A．had worn

B．wore

C．were wearing

D．are wearing

旁路兼母联的线路保护更改定值时，（）.

A、只须将该线路保护停用进行更改

B、可直接进行更改

C、必须将该开关改为热备用进行更改

D、必须将该开关改为冷备用进行更改