MyfamilyandIhavevisitedourfriend,Dennis,inChicagosev...
问题详情： MyfamilyandIhavevisitedourfriend,Dennis,inChicagoseveraltimesinsummer,butwehardlyvisitedhiminwinter.It’sDecembernow,andhereweareinChicago.Wehavebeenherefortwoweeks.It’smuchcolderinChic...