we have been told that in no cases__our friends during office hou_英语解答

we have been told that in no cases__our friends during office hours.
A.may we call B.did we case

人气：495 ℃　时间：2020-01-27 09:21:30

解答

选A.意思是我们决不可以上班时间给朋友打电话
B是过去式,表示的是过去,所以不合题意