Can you tell me _______ when I called you?

A．what were you doing

B．what are you doing

C．what you were doing

D．what you are doing

机动车在道路边临时停车时，应怎样做？

A．可逆向停放

B．可并列停放

C．不得逆向或并列停放

D．只要出去方便，可随意停放