债权人与债务人协议变更借款合同的，应当取得（）同意

A.主管部门

B.主管部门书面

C.保证人

D.保证人书面

Our teachers always tell us ­­­________ across the street when the traffic light is red.

A. to go           B. don’t go           C to not go            D. not to go