Three month ___(be) a long time

Three month ___(be) a long time i go to the supermarket three ___(time) a month Three hundred years ___(be)a short time in sory. three years___ a long time for us students.A are B be C is D 7.Three years is a long time to be without a job. 分别翻译:once a month.和twice a month .和three time a month. She flies to Nanjing three time a month,three times a month i go to the movies about three ----(time)a month. I visit my grandparents three time a month对three time a mont 2.After ___ seemed to be a long time,the old man went out of Three years( )a long time for us students A.a a month?long or